Black anodized aluminum. For 1.25″ diameter bars. Allows you to cut handlebars to make the pullback angle adjustable; similar to the Ness modular handlebars. Clamps are 4″ long and feature an internal stop at 2″. This allows to properly clamp 2″ of each side of the bar for a secure hold. Incl. cutting and torqueing instructions for the included hardware.