AltaLine Bicycle M.T.B Bolt/Wedge 22.2mm Stem Chrome.
The wedge works in tandem with the bolt to compress the stem clamp and ensure a solid connection to the fork, contributing to the stability and handling of the bike. Stem to Fork Connection: The bolt/wedge is inserted into the top of the fork steerer tube, where the wedge is compressed by the bolt to clamp the stem securely to the fork.