WHISKY No.7 Carbon Seatpost - 31.6 x 400mm, 18mm Offset, Matte CarbonThe No. 7 Carbon seatposts are made from the highest quality materials to be durable, lightweight and comfortable. Whether you're remounting during the cross race, or abusing them on the trail, you can trust Whisky's seatposts. Available in most common diameters with non offset or 18mm offset options. 31. 6mm diameter, 18mm offset Unidirectional carbon shaft, forged aluminum head Two bolt adjustable head 400mm length No rider weight limit 5 year