Klein Tools KNECT™ Quad-4 Heavy-Duty Impact Flip Socket, Metric (2-Piece) 6513MQS

The Quad-4 impact flip socket combines four metric hex sizes in one color-coded socket. Access 15 mm and 18 mm hex sizes, then flip to use 16 mm and 19 mm. The spring-loaded action allows for hands-free size changes by applying pressure to the smaller socket to compress it out of the way.