This aluminum alloy Metal D Loop Bow Release U Nock Combination Archery Aiming Ring is designed for use with shallow engagement type releases. It's easy to install and offers good performance during shooting. The Durable aluminum alloy material is lightweight and fits for compound bow. It increases arrow speed and eliminates cables, improving arrow flight while also stopping arrows from falling off strings, thereby increasing accuracy and consistency. Light and small, this archery accessory is a must-have for any serious bow shooter. Size: 2 x 2 cm | Weight: 22 g | Available Colors: Black, Red, Blue Features 1. Designed for use with shallow engagement type releases. 2. Easy to install with screw and use with release will have good performances during shooting. 3. Durable aluminum alloy material, lightweight and easy to use, fits for compound bow. 4. Stop arrows from falling off strings, increasing accuracy and consistency by improving arrow flight. 5. Light and small, which increases arrow speed and eliminates cables. Specification Material: Aluminium alloy Color: Black, Red, Blue Size: 2 x 2 cm Weight: 22 g Package Include: 1 Metal D Loop