BBB RoadForce II Stem are all made with the modern day cyclist in mind, Strong one piece construction with stainless steel bolts and available in a various lengths from 60mm to 130mm. Although officially BBB stands for Bikeparts for Bikers by Bikers we also believe that we provide the following : Bold Innovation - Brilliant Designs - Beyond Expectation. Strong 6061 aluminum. 3D forged one-piece construction. For oversized road handlebars. Stainless steel bolts. Bar bore: 31. 8mm. Angle: 6 degree. Extensions: 60, 70, 80, 90, 100, 110, 120 and 130mm. Weight: 162g.