The Muya G31001-YLB Features a 64mm prism accuracy of <5 second. Tilting holder and prism canister are both constructed of anodized aluminum. Has a 0 or -30mm offset, fits any 5/8 11 prism poles or adapters. Use a simple but proven rearing locking system. Height of tilting axis is 115mm. Yellow in color. silver coated prism. Comes with a carrying bag.