Motion Pro - Sag Scale IINew and improved version of the original Motion Pro Folding Sag Scale. The Sag Scale II features a cone shaped axle locating pin that fits hollow axles up to 20mm to ensure repeatable precision. Specifications Works on mini and full size motorcycles Blue anodized finish and laser engraved markings Can check the front or rear sag Made from 6061 T6 aluminum Inch and metric scales. Compact, swing out design allows it to fit most toolboxes Adjustable zero