Ideal for those small parts that require special set-ups to machine. Can be used on lathes, mills or any other machine where special work-holding is needed. Comes with six 6061-T6 aluminum clamps, six .150 thick hardened washers, six each of the following 1/4-20 socket-head capscrews: 1" long, 1-1/2" long, 2" long, 2-1/2" long and 3" long. All are stored neatly in an oak block that can be kept in the top of most toolboxes.