Billet aluminum construction Covers the entire clamping area of 1-1/4" handlebars that are sized down to 1"; can also be used on 1" handlebars For use with 3-1/2" on-center risers with offset holes Provides better support for stock or aftermarket handlebars; strengthens risers and improves control Made in the U.S.A.. BUFFALO B-MILL TOP CLAMP