ReviewsConvex concave Lens

AceShot Thumb Grips (8pc) for Xbox One (Series X, S) & Steamdeck by Foamy Lizard – Sweat Free 100% Silicone Precision Raised Antislip Rubber Analog Stick Grips For Xbox One Controller (8 grips) PINK

Each order comes with 4 convex and 4 concave 100% silicone sweat free grips (controller NOT included).
Convex right stick for enhanced precision & improved accuracy while aiming.
Concave left stick for grip and comfort which reduces hand and thumb fatigue.
**Fits perfectly on the 2022 Steamdeck** Great for Halo, COD and pretty much any FPS.
Quickly mount over existing new or worn analog thumbsticks.

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AceShot Covert OPS Thumb Grips (8pc) for Xbox One (Series X, S) by Foamy Lizard ® Sweat Free 100% Silicone Precision Raised Antislip Rubber Analog Grips for Xbox One Controller (8 Grips) CAMO

Each order comes with 4 convex and 4 concave (Each camo pattern is unique for each purchase) 100% silicone sweat free grips (controller NOT included).
Convex right stick for enhanced precision & improved accuracy while aiming.
Concave left stick for grip and comfort which reduces hand and thumb fatigue.
Perfect for Halo, COD and pretty much any FPS.
Quickly mount over existing new or worn analog thumbsticks.

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QWORK 7Pcs Fillet Weld Gauge Set - Welding Inspection Gauge Testing 1/8 -1 3.2mm-25.4mm Ulnar Metric & Inch for Professional Welders

Durable: Made of high-quality 304 stainless steel, this gauge set has great rust resistance and wear resistance..
Design: The gauge has seven measuring rulers, and each piece can measure the size of two concave and convex solder feet..
Clear Double Scale: This gauge has inch and metric scales. And the scale is engraved by laser, precise and durable..
Application: It can be used to measure the size of convex and concave solder feet, such as testing bridges, shipbuilding, boilers etc..
Measure Range: Metric Measure Range: 3mm, 4mm, 5mm, 6mm, 8mm 9mm, 10mm, 11mm, 12mm, 14mm, 16mm, 19mm, 22mm and 25mm, Imperial Measure Range: 1/8"....

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Firestone Transforce AT2 All Terrain Commercial Light Truck Tire LT235/80R17 120 R E C

【TOP QUALITY】:The rear twin tires are made of rubber, the tire frame is made of aluminum alloy, and the tires are lined with sponge, which is more environmentally friendly, high quality, fine workmanship, durable and long service life..
【SUIT FOR】: It is completely suitable for WPL D12 1/10 RC trucks. If your truck is suitable for use, our products will be your good choice..
【SMART DESIGN】:The veins with concave and convex patterns, after reasonable design, have deep marks, which can have better grip during use..
【DAZZLING APPEARANCE】:Exquisite workmanship and perfect surface treatment, bring a unique appearance, which is an ideal substitute for the original damaged or worn truck..
【ANTI‑SLIP】:Deep concave and convex lines, with good anti-skid effect, can provide strong road support for stable and flexible driving, and more safety guarantee when using..

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Kontrol Freek FPS First Person Shooter CQC SIGNATURE Thumb Grips for PS4 Playstation 4 Controller

Package Includes: 2x Kontrol Freek FPS CQC SIGNATURE series Thumb Grips for PS4 Controller.
NOTE: These thumb grips are for Playstation 4 controllers only.
NOT compatible with controllers for other systems..
FPS Freek CQC Signature newly formulated rubber compound and unique concave/convex thumb surface provide unsurpassed comfort and control..
Whether you're a run n' gunner, dog tag collector or shotgun-wielding super commando, FPS Freek CQC (Close Quarters Combat) Signature Series is the right tool for the job. FPS Freek CQC Signature newly formulated rubber compound and unique concave/convex thumb surface provide unsurpassed comfort and control..
The slightly extended height added by the CQC Signature creates a seamless "in-between" feel for those who prefer less adjustment or have smaller hands. The CQC Signature is also perfect for that often neglected left analog stick that could benefit from more grip without sacrificing quickness..

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AceShot Thumb Grips 8pc for Xbox One Series X S & Steamdeck by Foamy Lizard – Sweat Free 100% Silicone Precision Raised Antislip Rubber Analog Stick Grips for Xbox One Controller 8 Grips Black

Each order comes with 4 convex and 4 concave 100% silicone sweat free grips.
Convex right stick for enhanced precision & improved accuracy while aiming.
Concave left stick for grip and comfort which reduces hand and thumb fatigue.
Fits perfectly on the 2022 Steamdeck** Great for Halo, COD and pretty much any FPS.
Quickly mount over existing new or worn analog thumbsticks, please note excessively worn thumbsticks may cause grips to slip off.

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Optical Glass Lens, 3' (75mm) - 200mm Focal Length - Ground, Beveled Edges - Use as Top Spinning Base - Eisco Labs

DOUBLE CONCAVE || Highly polished, double concave lens.
SPHERICAL || Lens measures 3" (75mm) in diameter and approximately 12mm thick.
200MM FOCAL LENGTH || Diverging lens with a 200mm focal length.
OPTICALLY WORKED GLASS || Made of high quality, optically worked glass. Highly polished with beveled, ground edges.
GREAT FOR PHYSICS CLASSROOMS or TOP SPINNING || This optically true lens is excellent for physics classroom demonstrations in optics and light refraction. It's smooth, concave surface also makes this lens ideal for top spinning.

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Optical Glass Light Spectrum Prism Basic Physics Teaching 4PCS

The refractive index of Lens made of optical glass is better than those made of acrylic..
Contents:Double convex lens, Double convex lens, Semicircle, triangular shaped lens..
Good for demonstrating optical principles and effects for students..

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Raised Thumb Grips 8pc for Playstation 5 Dualsense by Foamy Lizard – Sweat Free 100% Silicone Precision Antislip Rubber Analog Stick Grips Compatible with PS5 PS4 Stadia & Switch Pro Blue

GRIP VARIETY: Each order comes with 4 convex and 4 concave 100% silicone sweat free grips (controller NOT included).
PRECISION: Convex right stick for enhanced precision & improved accuracy while aiming, edge traction lines for improved quick shot reflexes.
NON-SLIP: Concave left stick for grip and comfort which reduces hand and thumb fatigue, edge traction lines for running and movement.
EASY INSTALL: Quickly mount over existing new or worn analog thumbsticks.
PLEASE NOTE: This only for the Playstation 5 Dualsense, Playstation 4 Dualshock, Stadia, Razer Wolverine (all types) and Nintendo Switch Pro (Not for....

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EastMeetsWest 6.4\ Chinese Oriental Protection Feng Shui Home House Gold Bagua Convex Mirror

...g Shui”, the oldest and first Feng Shui institution which was commenced in AD 960-1279, during the Song Dynasty. It has since become a common Feng Shui tool, because it is inexpensive, easy to use, and is very potent in repelling malicious spirits and intents that are after you..
There are two types of baguas: the Convex Bagua and the Concave Bagua. The Convex is used to deflect all negative chi. When using this, one must be cautious as to not bounce the negative energy to neighbours or surroundings. One should only make use of the Convex Bagua if the Shar Chi is having a severe effect, or if one is positive that using it will do no harm to others in the area. If not, always opt for a concave or flat bagua..
*Note* Never place a bagua inside your home or office.
this can result in very harmful chi and can sometimes even be fatal. Display baguas at the chi entry points of your home or office – in front of a door or window will suffice in driving away bad chi..

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VGEBY Rear Twin Tire, 2Pcs 55mm Dia RC Wheel Tyre Dual Tires Fit for WPL D12 1/10 Remote Control Truck(Black) Rc Dually Wheels

【TOP QUALITY】:The rear twin tires are made of rubber, the tire frame is made of aluminum alloy, and the tires are lined with sponge, which is more environmentally friendly, high quality, fine workmanship, durable and long service life..
【SUIT FOR】: It is completely suitable for WPL D12 1/10 RC trucks. If your truck is suitable for use, our products will be your good choice..
【SMART DESIGN】:The veins with concave and convex patterns, after reasonable design, have deep marks, which can have better grip during use..
【DAZZLING APPEARANCE】:Exquisite workmanship and perfect surface treatment, bring a unique appearance, which is an ideal substitute for the original damaged or worn truck..
【ANTI‑SLIP】:Deep concave and convex lines, with good anti-skid effect, can provide strong road support for stable and flexible driving, and more safety guarantee when using..

Check Stock