Made of aluminum alloy, sturdy and durable, sturdy archery composite bow 4 finger and thumb release aid, more durable, A must-have for bows and arrows.The sensitivity of the release can be adjusted by a wrench. Good operation, no hand injuries, composite bow and arrow release, spare release in your hunting bagBow and arrow pull release and U-shaped connection, small and light, easy to carry, hard oxidation treatment, built-in safety equipment, suitable for hunting, factory test can easily bear 200 pounds (about 90.7 kg).Bow and arrow release, perfect to improve your bow shooting accuracy, thumb release archery, good operation, no hand injury, all ages, very suitable for novice or experienced archers.colour: red + black/blue + blackMaterial: aluminum alloySize: 10.5x9x1.5mmPackage Contents:1 x spreader2 x wrenchOnly the above package content, other products are not included.Note: Light shooting 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.