Constructed of 6061 aluminum. Both pullback and straight riser options have top clamps angled at 35. Fits all models with 3-1/2in center-to-center riser spacing. Work with any standard 1in handlebar. Top upper clamp bolt is 4-1/2in center-to-center. Base hole tapped for standard 1/2in x 13 mounting bolts (bolts not included) Sold with top clamp and hardware. Made in the U.S.A.