Proto Impact Socket Bit Set J74252 The Proto J74252 1/2 in. Drive Hex Bit Impact Socket Set is a comprehensive set of sockets that you can use for your various projects. It is built to handle even the toughest jobs and includes 6 hex bit impact sockets that range from 10 mm to 8 mm. This hex bit impact socket set has a drive size of 1/2" and comes with metric sockets measuring 10 mm, 12 mm, 14 mm, 17 mm, 6 mm, and 8 mm. The black oxide finish gives these tools an attractive look while also making them corrosion resistant. Proto Impact Socket Bit Set Features: These hex socket bit sets come in a range of sizes to fit hex-shaped fastener heads. Proto® 6 Point Impact Sockets are ideal for use on stubborn or damaged fasteners, and also on fasteners made from soft materials. The TorquePlus™ design is a high performance drive configuration that allows for quick and easy socket engagement to the fastener flats, not the corners. The TorquePlus™ configuration employs a radius-corner design, shifting contact area and stress away from the fastener corners and distributing contact stresses over a large area of the socket, minimizing slippage. The TorquePlus™ internal design minimizes fastener rounding, helps to extend fastener life, and allows the user to more easily turn worn, rounded, or rusted fasteners. Proto Tools have been manufactured in the USA for over 110 years, made to standards suitable for stringent aerospace requirements and heavy mining applications. The set includes 10, 12, 14, 17, 6, 8mm. Made of forged steel. Designed to sustain high torque loads produced by modern impact wrenches Heat treated for maintaining balance of hardness and strength Offers stamping of sizes on tools for convenience in identification Includes a side locking hole for effective tool gripping Measurement Type / Metric Tip Size / 10 mm; 12 mm; 14 mm; 17 mm; 6 mm; 8 mm Drive Size / 1/2 inch Material / Alloy Steel Finish / Black Oxide Number of Pieces / 6 Replaceable Insert / No Tip Style / Hex Impact Rated / Yes Tether Ready / No Piece Count Range / 2 to 25