Shank Type: SDS-Max Drill Bit Shank: SDS-Plus The adapter fits into an SDS-Max chuck and can accommodate SDS-Plus drill bits Bosch 1618598159 Drill Bit Adapters For Drill Bits SDS-max And SDS-plus Bosch 1618598159 SDS-Max to SDS-Plus Adaptors is available to buy online at Caulfield Industrial. Drill Bit Adapter for rotary hammers transitions from an SDS-max shank to SDS-plus drill bits The adapter fits into an SDS-Max chuck and can accommodate SDS-Plus drill bits Shank Type: SDS-Max Drill Bit Shank: SDS-Plus