This Irwin® Bolt Grip Fastener Remover 5 Piece Base Set is ideal for removing rounded rusty or painted bolts. It has a unique reverse spiral flute design which securely grips and removes stubborn nuts and bolts.They can be used with a hand ratchet 3/8inch square drive and has hexagon flats for use with a spanner or adjustable wrench. They are made of high carbon steel for long life and durability. Supplied in a carrying case. Specification: Sizes: : 3/8in (9mm) 7/16in (11mm) 1/2in (13mm) 9/16in (14mm) 5/8in (16mm). Additional Information:• Extractor Type: Bolt Remover



