Split design aerobar extensions provide maximum width adjustability. MULTI-FIT System™ fits 26.0mm & 31.8mm bars. Includes F-19™ length, width, and rotationally adjustable anatomic armrests. 6061-T6 aluminum extensions and forged brackets. Length, width, rotational extension adjustment. Provided with climbing friendly flip-up ZB™ brackets. Compatible with rigid ZB™ arm brackets and Aerobridge™. Pre-drilled for internal cable routing. Shot peened and anodized finish for added strength and durability. Matte black. 722g.