Microclick design makes adjustment easy for both screw-in depth and spring tension to make tuning and quick adjustments a breeze. Four different thread lengths available to fit any riser and rest combination. 3 quality springs included of different tensions so all options are available for the best tune. Screw into the bow once - all further adjustments can be made with the simple micro-click adjustment. High-quality stainless steel and 6061 aluminium construction. Included; Accessories3x springs (soft installed), 2x replacement pins, 2x spacers and clamping tool Thread Size: 5/16-24 Material: Steel and Anodized 6061 Aluminium