Relton RB22 1-3/8" Rotary-Only Rebar Eater Straight-Shank At last, the answer to drilling through concrete-embedded rebar! No more broken or shattered hammer bits; now you can drill through the rebar and not have to relocate the hole to avoid the rebar! This is a two-piece system, and comes with a shank to make a overall length of 12"; however, longer or shorter shanks are available.