sdg-i-beam-unidirectional-carbon-micro-adjust-seatpost-0mm-setback-27-2x400mm
sdg-i-beam-unidirectional-carbon-micro-adjust-seatpost-0mm-setback-27-2x400mm, SDG I-Beam Micro Carbon Seatposts. I-Beam technology eliminates seat rails for a single beam incoporated into the saddle shell. I-Beam provides the widest range of fore and aft adjustments available and uses simple 1-bolt clamp.Uses a single, easy-access 5mm bolt for quick and simple adjustments or saddle changes6061 cold forged aluminum head and clamps with carbon tube