Irwin® Hanson®, 394001, Base Set, Measurement System: Imperial/Metric, For Use With: Hand Ratcheting, Impact Wrench, Air Ratcheting, Flat Wrench, Plier, Adjustable Wrench, Socket and VISE-GRIP® Locking Plier, 5 Piece, Specifications: 3/8 in Square Drive, Carbon Steel

The bolt-grip fastener remover is designed to work with multiple drive options including ratchets, impact wrenches, flat wrenches and locking pliers. It has a unique reverse spiral flute design that securely grips and removes stubborn nuts and bolts. In addition to this 5-piece base set, there is a 5-piece expansion set available to address a complete range of fastener sizes. In addition, the pieces in the expansion set can be conveniently housed in the base set case.