The Quad-24 deep well impact flip socket set combines 24 SAE and Metric hex sizes in 6 color coded sockets. Small 1/4 to 7/16-Inch (7 to 12 mm), medium 1/2 to 11/16-Inch (9 to 14 mm), and large 3/4 to 1-Inch (15 to 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. Compatible with Klein Tools' 1/4-Inch hex flip socket impact shaft, these Quad Sockets are a compact and convenient solution for any job