Relton 7/8" X 12" SDS+ Shank Rotary Rebar Cutter Complete 2-Piece. The answer to drilling through concrete-embedded rebar. No longer necessary to relocate holes to avoid rebar; just drill straight through! Diameters 13/16" and smaller are a 1-piece cutter, and diameters 7/8" and larger are a 2-piece system.