Simpson SDS-Max Shank for Rebar & Plate Cutters MCSDMModel No. MCSDM Description. For use in SDS max style drills. Shank design allows rotation only. Shank Type. SDS max Shank Shank adapters for rebar cutters are designed to pair with all sizes of rebar cutters and for use with various types of rotohammers and hammer drills. Specifically designed to drill through embedded rebar, this two piece system provides an economical solution that prevents possible damage to carbide drills bits.