Moose Racing Contour hand guards for 28, 6 mm bars (see below). Features Made from finest top quality 6061-T6 aluminum Contoured to the shape of the handlebar for better fit Special "U"-shaped inner clamps for more cable/control space All mounting hardware is included Fits both dirt bikes & ATVs Made in the U.S.A. Suitable for 28, 6 mm / 1 1/8" bars Renthal Thinwall