Keyless Drill Chuck Adapter + SDS Adapter Makita Bosch 13mm 1/2" X 20 UNF

1/2" X 20 UNF. 13mm 1/2" Chuck. Takes up to 13mm Drill Bits. - AB, BT, FK, GY, HS, IM, IV, KA, KW, PA, PH, ZE, all Islands excluding IOW.

eBay