The quad-12 deep well impact flip socket set combines 12 SAE hex sizes in 3 color-coded sockets. Small 1/4 in to 7/16 in, medium 1/2 in to 11/16 in, and large 3/4 in to 1 in. 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 in hex flip socket impact shaft, these quad sockets are a compact and convenient solution for any job.