Makita B-64163 Adapter, Spline‘SDS‘PLUSMakita B 64163 If you regularly use a rotary hammer, the Makita Adapter (Spline to SDS PLUS) delivers maximum convenience. The Adapter allows the use of SDS PLUS bits on Spline shank Rotary Hammers (bits and rotary hammers sold separately). This convenient compatibility gives Spline shank rotary hammer users access to Makitas extensive line of SDS PLUS bits for concrete drilling, chipping and demolition. The adapter features high quality steel