• Includes 10, 12–15 and 17 mm in a storage tray
• Snap-on sockets using the Flank Drive system grip the fastener on the flanks/flats delivering 15–25% more turning power
• Nickel-chrome alloy finish resists rust and corrosion
• Manufactured from the highest quality proprietary steel, providing optimum strength and durability
• 6-point configuration and Flank Drive wrenching system