The double light clamps are lighter than the double clamp and made from high quality trade price certified 6061 aluminum with upgraded steel inserts to withstand all the abuse a rider can hand out still includes a free shim for fitting standard and oversized barsnew looks to match the new district collectioncertified 6061 aluminumupgraded steel inserts for extra strengthincludes shim for standard and oversized bar compatibilityheight 39mmweight 100g