Handlebar extensions made from 6061 aluminum. The extensions are available in two options, curved and straight, and feature upper clamps tilted at 35°. They are suitable for all models with a center-to-center distance between the extensions of 3-1/2" and are compatible with any standard 1" handlebar. The top bolt of the upper clamp has a center-to-center distance of 4-1/2". The hole in the base is drilled for typical mounting screws 1/2" x 13 (screws not included). They are sold with upper clamp and mounting hardware. Manufactured in the USA.