Need to add a shoulder belt mount to your cage? Or, just want something more secure for the standard lap belt? The Summit Machine CNC machined seat belt bung is designed just for this. Machined from solid 1045CF medium carbon steel for added strength, this bung fits 2″ OD tube with an overall length of 2.5″ so there is good bung exposure on both sides of the tube for welding. 7/16″-20 female threaded on the front side, and a machined lip on the backside so the bung cannot pull through cage in case of weld failure. Minor OD fits a 3/4″ drilled hole.