This 1/2" to 1/4" collet adaptor shank reducer is the mainstay in the CNC'ers toolbox when 1/4" shank bits are the only ones for the job....and all you have is a 1/2" chuck on your router.
Works for any bit with a 1/4" shank. Rarely will you need more than 1 unless you have multiple CNC routers.
Fits all brand routers and machining centers with 1/2" spindle chuck collets.
CL-24
For Vectric users, get the latest CNC router bit tool database by going to this page
For CNC’s with routers, refer to this PDF download feeds & speeds table