The Greenlee 7212SP13 Drawstud, Long, 3/8" x 4-7/10" is a knockout punch designed for faster punching. It has a speed punch design which allows you to set up and disassemble your tool three times faster than traditional knockouts. This draw stud is compatible with all Greenlee manual, hydraulic and battery operated knockout drivers. The speed punch design also makes it easier to use on conduit and pipe sizes from 3/8" to 4 7/10". The Greenlee Drawstud will save you time when working on your next project.. This item has been restricted from sale in the following state (s): []