Irwin 10504634 Bolt Grip Fastener Remover Base Set 5 PieceThis 5-piece base set from Irwin is designed for the removal of rounded, rusty, or painted bolts. Its unique reverse spiral flute design ensures a secure grip on stubborn nuts and bolts. Suitable for various users, it offers versatile application methods.Features Unique reverse spiral flute design for secure gripping. Hexagon flats for use with a spanner or adjustable wrench. Constructed from high carbon steel for durability. Supplied in a carrying case.Specifications Brand: Irwin MPN: 10504634 EAN: 0024721012579 Sizes: 3/8in (9mm), 7/16in (11mm), 1/2in (13mm), 9/16in (14mm), 5/8in (16mm) Drive: 3/8inch square drive for hand ratchet