The bracket for seatposts is also available without adapter head. Extender enables you to use all handlebar accessories on seat posts. Holds bags, backpacks and baskets. Easy mounting with stainless steel strap on any seat post of Ø 25-32mm. Both versions of the handlebar adapter head (version with lock and without lock) can be mounted onto the Extender bracket. Ø 32-36mm clamp for oversize seat posts available. Ideal on bikes without carrier, allowing you to click on bigger bags, backpacks or baskets (depending on the amount of space on your bike).