Bontrager Comp, 6061 alloy,
27.2 mm, 8mm offset, 250 mm length

See https://www.trekbikes.com/ca/en_CA/equipment/cycling-components/bike-seatposts-accessories/bike-seatposts/bontrager-comp-seatpost/p/13373/

Removed from a Trek bike after upgrading.

Item is available if you can still see this post.
When you call please mention you found this ad listing on OKz.ca