SDS-MAX TO SDS-PLUS ADAPTER *Chuck Size: 1/2 in. in. *Keyless: Yes *Style: SDS-Plus *Product Type: Chuck Adapter *ShankDiameter: 3/4 in. *Shank Type: SDS-Max Shank *Number in Package: 1 pc. *Usage: For using SDS-Plus Drill Bits on SDS-MaxHammers