Features: ABW impact sockets feature the PowerDrive fastening system, delivering up to 20% more torque to the fastener. ; PowerDrive impact sockets are ideal for stubborn fasteners and also reduce the risk of fastener rounding. ; The PowerDrive design allows the socket to contact the fastener away from the corner while also dispersing the stress over a larger area. ; When you work with ABW impact sockets, you are working with premium tools designed to give you "The Professional Advantage" ; ABW sockets are designed, manufactured and tested to the highest specifications, to ensure unequalled quality. ; All impact sockets are made according to relevant American Federal specifications GGC-W-600A, ANSI & DIN standards 3121 & 3129; Specifications:Part NoX642MSize42mm