Relton RB-11 Specifications: Diameter: 3/4" Overall Length: 12" Weight: 1.1 lbs. Suggested RPM's: 600-850Relton RB-11 Includes: (1) 3/4" Rotary-Only Rebar Eater Straight-ShankRelton RB-11 Features: 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 one-piece system (shanks are non-removable).