WHISKY No.7 Alloy Seatpost - 27.2 x 400mm 18mm Offset Matte BlackWHISKY No. 7 Alloy Seatpost 27. 2 x 400mm 18mm Offset Matte Black. The No. 7 Alloy seatposts are made to be durable lightweight and comfortable. Whether youre remounting during the cross race or abusing them on the trail you can trust Whiskys seatposts. Available in most common diameters with non offset or 18mm offset options. 2014 Aluminum shaft construction Two bolt adjustable head 400mm length No rider weight limit 5 year Whisky warranty ASTM