IRWIN Flexible Extensions have a chuck that is compatible with round, hex and quick-change shanked drill bits. They are constructed from high carbon steel for durability and life and bits lock in place when the set-screw is tightened with a hex key. They are also designed with a 3-flatted shank which prevents slipping drill chucks and includes a hole for wire pulling.
IRWIN Flexible Extensions have a chuck that is compatible with round, hex and quick-change shanke drill bits. They are constructed from high carbon steel for durability and life, and bits lock in place when the set-screw is tightened with a hex key. They are also designed with a 3-flatted shank which prevents slipping drill chucks and includes a hole for wire pulling.