Made of aluminum , 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 release, spare release in your hunting bag Bow and pull release and U-shaped connection, small and light, easy to carry, hard oxidation treatment, built-in safety equipment, suitable for hunting, test can bear 200 pounds (about 90.7 kg). Bow and release, perfect to your bow accuracy, thumb release archery, good operation, no hand injury, all ages, suitable for novice or experienced . colour: blue + black : aluminum Size: 10.5x9x1.5mm Package Contents: 1 x spreader 2 x wrench Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.