THREAD SPECIFICATION: This drill chuck arbor is a 3MT shank to 1/2in‑20 threaded hardened morse taper MT3 adapter, useful and practical. Connecting Rod: Morse MT3. Item Type: Drill Chuck Arbor. WIDE APPLICATION: This high accuracy drill chuck mandrel is widely used in tapping machine, drilling machine, milling machine, boring machine, pneumatic tools, etc.
eBay