The uses for this latch are endless--tube doors, steering columns, seat sliders, tool hold downs, plus many other quick release applications. The heavy duty spring loaded pin is a 1/2" long and a 1/2" in diameter. The 1" O.D. steel pin housing is 1 1/2" in length and provides plenty of surface to weld in place. Our T handle latch is able to lock in the open position by pulling and rotating at 90 degrees. Overall height is 3.5" These are made from mild steel and are made to last, nothing weak here!