STARRETT CORE PILOT DRILL EXT 240MM

Starrett BMA1240 240mm long Hexagon Shank Adaptor is an adaptor for core drills and it can also be used on a handheld drill.Used in 3 jaw chucks Rotary power drills only (not hammer drills unless the power tool has a rotor stop) Any hammer action will destroy the Core Drills cutting teeth rendering the Core Drill out of guarantee