The Volume VLM Top Load Stem has a really clean look, rounded at the back with an angled top plate giving it an edge. Built from CNC machined 6061 aluminium for maximum strength & durability with CNC cuts inside & out to reduce the weight. The wider 50mm clamping area makes sure your bars are tightly secured. section Product Specs TYPE: Top Load REACH: 50mm RISE: 34mm CLAMPING DIAMETER: 22.2mm WEIGHT: 348.7g (12.3oz)