These nifty little adapters easily convert your Stan's 3.30, Stan's 3.30Ti front hub and ZTR front hub with silver caps to accept 15mm through axle. Simply remove your old caps with axle vise and pop in the new caps.Simple design and good construction are always a good thing and that is exactly what these non-complicated adapters offer. They only work with Stan's 3.30, Stan's 3.30Ti front hub and ZTR front hub with silver caps. They are not compatible with other manufacturer's hubs. Includes complete adapters for one front hub.