The Greenlee 1614SSP Knockout Draw Stud is a durable product. It is made of steel, making it tough and long lasting. The knockout draw stud measures 3/8" L x 2 13/16" H. This stud is compatible with hydraulic drivers. If you're looking for a reliable knockout draw stud that will stand the test of time, then this Greenlee 1614SSP Knockout Draw Stud is what you need.. This item has been restricted from sale in the following state (s): []