Top load stem from Saltplus. The Manta stem is CNC machined from 6061-T6 aluminum & features STC (shark tooth clamping) inside the stem to help grip the bars. This stem also has a wide faceplate with central bore for reduced weight, unique side pocket detail section Product Specs TYPE: Top Load REACH: 50mm RISE: 33mm CLAMPING DIAMETER: 22.2mm WEIGHT: 340g