The Irwin 15-Piece Hex Head Multi-Spline Set (53228) is a professional-grade tool designed for the removal of broken and damaged fasteners. Its primary benefit is its ability to extract stripped or snapped studs, bolts, and socket screws with high efficiency. The set’s multi-spline design and left-hand spiral create a strong, secure grip on the fastener, providing the necessary torque to remove it without causing further damage. Each extractor features a hex head, allowing it to be used with a variety of standard tools like wrenches, sockets, or vice grips, providing exceptional versatility in different work environments. Crafted from high-carbon steel, these extractors are built to withstand high-torque applications and offer long-lasting performance. The set is neatly organized in a durable plastic case, making it easy to store and transport.KEY FEATURES AND BENEFITS: Multi-Spline Design: Provides a secure grip on broken fasteners, enabling effective removal without slippage or damage. Hex Head Compatibility: Allows use with standard wrenches, sockets, or vice grips for versatile application. High-Carbon Steel Construction: Ensures durability and strength to withstand high-torque removal tasks. Left-Hand Spiral: Tightens grip as you turn counterclockwise, helping to unscrew stubborn fasteners. Organized Storage: Comes in a durable plastic case for easy storage and transport, preventing loss of pieces.SPECIFICATIONS: Part Number: 53228 Material: High-Carbon Steel Number of Pieces: 15 Extractor Sizes: 1/8″, 5/32″, 3/16″, 7/32″, 1/4″, 9/32″, 5/16″, 11/32″, 3/8″, 13/32″, 7/16″, 15/32″, 1/2″, 17/32″, 9/16″ Weight: 1.815 lbs. Dimensions: 8.1″ x 4.4″ x 2.5″ Included in Package: 15-piece multi-spline hex head extractor set and a plastic storage case.HOW TO USE: Select the Correct Drill Bit: Choose a drill bit smaller than the diameter of the broken fastener. Use the recommended drill bit size etched on the side of the extractor for guidance. Drill a Pilot Hole: Carefully drill a hole into the center of the broken fastener, deep enough to allow the extractor to grip securely. Insert the Extractor: Place the appropriate size extractor into the drilled hole and tap lightly with a hammer to seat it firmly. Use a Wrench or Socket: Attach a wrench or socket to the hex head of the extractor and turn counterclockwise. The left-hand spiral bites into the fastener, turning it out. Remove the Fastener: Continue turning until the broken fastener is fully removed.BENEFITS OF USING IRWIN 15-PIECE HEX HEAD MULTI-SPLINE SET (53228): Effectively removes stubborn, broken fasteners without slipping or further damage. Hex-head design works with common tools for maximum versatility. Durable high-carbon steel construction withstands high-torque applications. Compact plastic case keeps set organized and portable.FEATURES: Etched Markings: Each extractor is marked with its size and corresponding drill bit size for easy identification. Wide Size Range: Includes extractors from 1/8″ to 9/16″ to handle various fastener diameters. Compact Storage Case: Custom-molded plastic case securely organizes all 15 pieces. Left-Hand Spiral: Provides superior grip by tightening as you turn counterclockwise. Hex Head: Compatible with standard wrenches and sockets for flexible use.