3" head assembly for the Hold Fast Vacuum Chuck System. Use to add an another size if you already own the system, or to customize your own vacuum chucking system. Holds both convex and concave pieces. Made of glass filled nylon. Works on any lathe with a hollow #2 Morse Taper headstock spindle. USA
Chuck Includes: An aluminum spindle adapter, two o-ring seals, and a No-Lock Spindle washer for easy removal of the chuck.