Reviews Double concave Lens

Bruce Charles Designs Spinning Top Base 3.93” 100 mm Diameter - Double Concave Fused Silica Glass Optical Lens - 30cm/300 mm Focal Length Thickness 0.4” 10mm - Spin Top Glass Base Surface

  • MAXIMUM SPIN TIMES. Made with fused silica. Harder, more smooth and durable than regular glass spinning top glass. Your spin top spins faster for....
  • UNMATCHED QUALITY. Precision machined, solid double concave lens. Center of lens is 2.8mm thinner than the edges on either side. Heavier than most so....
  • LOOKS EXCEPTIONAL. Frosted reducing glass lens edges. For that added clean look. Because every great looking precision spinning top can use a great....
  • SUITS ALL SPIN TOPS. From our own line of spinning tops to the others in your collection. This elegant spin station surface can extend your spin time....
  • NEW SPIN ON GIFTS. From serious EDC spin top enthusiasts, casual players or anyone looking to up their spinning top game. Click ADD TO CART to get the....
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Bruce Charles Designs Spinning Top Base 5.9” (150 mm) Diameter - Double Concave Fused Silica Glass Optical Lens - Thickness 0.45” (11.5mm) - Spin Top Glass Base Surface (150mm)

  • MAXIMUM SPIN TIMES. Made with fused silica. Harder, more smooth and durable than regular glass spinning top glass. Your spin top spins faster for longer with a flick of the wrist. No friction and more fun.
  • UNMATCHED QUALITY. Precision machined, solid double concave lens. 1500mm radius of curvature on either side. Heavier than most so our top spinning base stays in place for better spins. Also makes excellent reducing glass for artists or quilting.
  • LOOKS EXCEPTIONAL. Frosted reducing glass lens edges. For that added clean look. Because every great looking precision spinning top can use a great looking spinning top base.
  • SUITS ALL SPIN TOPS. From our own line of spinning tops to the others in your collection. This elegant spin station surface can extend your spin time and help you break records for bragging rights.
  • NEW SPIN ON GIFTS. From serious EDC spin top enthusiasts, casual players or anyone looking to up their spinning top game. Click ADD TO CART to get the most out of your spin toys!.
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Bruce Charles Designs Spinning Top Base - Precision-Machined Teak Top Spinning Base and Fused Silica Spinning Glass Double Concave Lens 100mm/4 Dia 300mm Focal Length - Best EDC Spin Top Lovers Gift

  • SPIN FOR LONGER and faster. Bruce Charles Designs top spinning base houses our fused silica glass spinning top glass piece. Ultra luxurious craftsmanship meets performance.
  • MADE TO IMPRESS using precision-machined solid, beautiful Bermese Teak. The most durable of the hardwoods. More than just exquisite decoration, our spinning top base won’t crack and is water resistant.
  • CRAFTED PERFECT to keep spinning tops spinning. The station keeps the spinning glass stable and motionless. Helps reduce spin top motion. Experience top spin speeds that last for minutes every time.
  • DOUBLE CONCAVE lens. 300mm focal length on both sides. CNC-lathed. Polished to a smooth surface finish. Designed for all spin tops. Ideal reducing lens for artist use and great for quilting.
  • GIFT PERFECTION and great for friends looking to up their EDC spinning top game. Why settle when you can spin? ADD TO CART and spin on this!.
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iShoot Metal Lens Collar Tripod Mount Ring Compatible with Canon RF 100-400mm f/5.6-8 is USM, Lens Support Holder Bracket Bottom is Arca-Swiss Fit Quick Release Plate Dovetail Groove

  • 1. The lens collar is tailor-made based on the shape and structure of the lens, only compatible with Canon RF 100-400mm f/5.6-8 IS USM Lens, cannot be used with other lens.
  • the inner wall of the tripod ring has a concave-convex irregular structure, and the switch hole is reserved, which does not affect the use of the switch on the lens.
  • the tripod ring cannot be rotated, only support horizontal shooting.
  • 2. The contact surface between the inner wall of the tripod ring and the lens is plastic composite film, will not wear lens surface when installed correctly.
  • there should be no stickers on the lens surface installation position, if there is, remove it, otherwise it will affect the normal installation.
  • hollow-out weight reduction design, net weight is about 160g.
  • 3. The tripod collar bottom is added 50mm long Arca fit quick release plate feature, can be used with 39mm Arca-swiss fit tripod ball head, panoramic head and clamp directly.
  • more practical than lens collars without QR-Plate..
  • 4. The Lens support bottom reserved 1/4" and 3/8" screw holes and stainless-steel anti-slip screws for fixing lens to tripod directly..
  • 5. The lens collar IS-RF140 can be combined with clamp mount converter IS-3950PRO (Sold Separately), which can be used for fluid heads w....
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Girl Skateboard Deck Geering Firework 8.25 x 31.875 with Grip

  • RIGID CONSTRUCTION: 31 x 8 inch 9 layer maple skateboard contains high quality abrasive surface, 85A PU casted wheels (50mm diameter & 30mm....
  • EXCELLENT PERFORMANCE: 50mm anti-shock 85A PU wheels, rapid speed ABEC-7 carbon steel bearings and high rebound PU bushings provide stable & powerful....
  • STRONG LOAD BEARING: Maximum load is up to 220lbs. The skateboard is made of 9 layers top quality maple deck, which has outstanding shock absorption &....
  • FASHIONABLE & COOL OUTLOOK: Double-kick sides, concave center and back attractive patterns (Classic Diamond, Unique Watercolor, Progressive Skull,....
  • SUITABLE FOR ALL LEVEL SKATERS: Double-kick concave structure is easy to brake, ideal for beginners & pros to do basic stunts and tricks. Gonex....
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Gotofine Double Sided Magnifying Makeup Mirror, 1X & 10X Magnification with 360 Degree Rotation- Clear & Transparent

  • 【1X/10X DOUBLE SIDED MIRROR】 1X HD mirror and 10X magnifying makeup mirror with 5.8inch diameter, flawless glass help you with face check, makeup, skin care etc. .
  • 【10X STRONG MAGNIFICATION】10X magnification can make you HAVE EXTREME DETAILS VIEW EVEN WITHOUT GLASSES! Perfect tool for contact lens put on, eyelashes makeup, plucking facial hair, pimple remove etc. *** Magnifying side using concave mirror, best image get in focus point, 10X magnify will be about 2~3 inch in center away from mirror. Not in focus point image will be blurry or reverse ***.
  • 【RUST-PROOF AND UPGRADED BASE】 Acrylic frame will let mirror lightweight and not degraded in any environment. With bigger size mirror, rather than flat base, we use clamshell base to make it more stable in using..
  • 【CLASSIC DESIGN 360° SWIVEL MIRROR】 360 Degree Rotation can be fixed to any angle for easy viewing as your will! And 95% transparency frame with silver coated handle&bearings will be perfectly fit in any space!.
  • 【PERFECT GIFT】 Gotofine mirror nice packed in box will make it a perfect gift for your friend and family.
  • a nice decoration for your home and store!.
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Vector of fire Fighter Skull Emblem Design Skateboard 31 x8 Double-Warped Skateboards Outdoor Street Sports Skateboard for Beginners Professionals Cool Adult Teen Gifts

  • LOADING BEARINGS: Max. 330 LBS (150 kg)..
  • SOLID SPECS: 8 layers maple wood, adopting cold extruding technology to make the deck more elastic with high hardness and suitable toughness..
  • WHEELS: Wheels are available in transparent and white, 52mm in size. If you don't have a special request, we' ll ship it randomly. Please feel free to....
  • DOUBLE KICK CONCAVE DESIGN: 31 x 8 inch full size double kick concave design, more convenient to control the direction and glide. Perfect ideal for....
  • COMPLETE: No assembly required. Perfect gift for your families and friends!.
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Skateboard PINESKY 31 Inch Complete Skateboard Double Kick Skate Board 7 Wooden Layer Canadian Maple Desk Skateboard for Kids and Beginners Black and White Skull

  • Unique Design！High quality maple, unique dyeing layer design.Excellent design will bring more heads turning..
  • Durable & Sturdy！Deck 31In long×8In wide full size double kick concave design,High quality wood boards,The max load is up to 330 lbs..
  • Perfect Experience！High speed 95A PU wheels work with ABEC7 bearings,Give you better balance control and shock absorption effect..
  • Beginner's First Piece！Design for beginners and skilled, double kick dissymmetric concave combines with customized emery sand paper give your feet enough locked feeling..
  • Fully Assembled Board！Enjoy your skateboard ride without assembly.In addition, Pinesky provides round-the-clock customer service to ensure 100% customer satisfaction..
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0G 0 gauge 8mm Skin Implant grade sili Double Flare Flesh Tunnels Ear Plugs AGAR Stretching Stretchers Piercing SI03 2Pcs

  • HIDE YOUR PIERCINGS 0g double flare tunnels - These ear gauges 0 make your ear piercings virtually invisible and very good for light and fair skin....
  • EASY TO WEAR, COMFY AND HEALING 0g silicone plugs - These size zero ear gauges are comfy enough to wear all the time even when you are sleeping and....
  • EAR STRETCHING 0g double flare silicone - These cool silicone ear gauges size 0 are both soft but solid. This means that the earskins hider saddle....
  • CONCAVE ON THE BACK gages size 0g silicone - The front of cute gauges earrings 0 g plug is solid but the back is concave for EASY TO PUT IN and take....
  • WHAT WILL BE DELIVERED? - 2 Pieces of gauge earrings size 0. These flesh colored plugs 0g gauge earrings 0g are made from the finest silicone. The....
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Womens Athletic Shorts, F_Gotal Women Yoga Shorts Scrunch Booty High Waisted Gym Workout Shorts Butt Lifting Hot Pants

  • The Moon Buddy has been fully optimized for all things SUP and Wing foiling..
  • Performance outline that is stable, easy to paddle, and has a low-swing weight for on-foil control..
  • Double concave hull design with front anti-sway fin make for forward projection, early release and deflection..
  • Slight deck concave that projects better board feel and balance..
  • Full deck EVA pad with inserts for strap placement..
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