Every one knows that re-setting your bars is the worst possible thing. It takes forever for your mind to agree that the bars feel how they did before slipping. We wanted to design a stem that clamped tight & evenly at that. We had seen stem bolts snap from a rocky plate & un-even tightening. With the PURGE stem we wanted strength & durability so we went with a fully CNC 6061 Ali block including a CNC’d United graphic on the side. You will notice the clamping system clamps completely shut up front. This is to stop the un-even tightening. Simply tighten the front bolts to lock your bars in place evenly then clamp down on the back to fully secure your bars in place. section Product Specs TYPE: Top Load REACH: 49mm RISE: 34mm CLAMPING DIAMETER: 22.2mm WEIGHT: 382g