Stem cap street Guilty with hole for hose which can be stretched trought the cap and fork steerer tube. Cap is supplied with special steerer tube insert, in which is also hole and this insert expands during tightening of the cap bolt. Inside the insert is instaled special cone insert which is pushed in the insert more and more when tightening the bolt. Stem cap is supplied with M5 steel bolt. The cap alone is made from aluminium with black anodisation. Weight of hole set is 20g.