Better match--Flexible switchingbetween 3or 4finger.Effectively solve the problem of unsuitable palm size.The Releaser Sensitivity and button positioncan be adjusted by Wrench. Perfectly improve the accuracy of hitting the target afety--The surface of the thumb button has a concave-convex design, which can effectively prevent slippage. CNC machining technology.Hard Oxidation Treatment, Built-in Safety Device.The factory test bears 200 pounds. Clamp head--The jaws adopt a hook-shaped design, which has a smaller contact surface with the bowstring and higher archery accuracy. It also reduces the wear of D loop rope.The action of the thumb button is . Optimized--Products include:archery release aids,With adjustment tools. Optimized the parts to make them smoother, better stability.Convenient to Carry,backup release in your hunting package. Bow Releaser,Perfect to Improve Your Bow Accuracy,thumb release archery, Good Operation, No Hand Injury,All ages and perfect for the new or experienced archer. Colour: red + black Material: metal Size: 11 x 8 x 3.5CM Package Contents: 1 x spreader 2 x wrenches 1 x wrist strap 1 x interchangeable finger Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.