1/2" Drive - Inch 3/8" - 1-1/4"; number of sockets 15. Nylon rails feature pre-printed Socket Sizes on the holders for easy identification. Available in both Fractional & Metric (color-coded) in 1/4", 3/8" & 1/2" Drive sizes.Each holder has a recessed spring ball to hold the socket . Rails include mounting holes .
