Tom Dugan stuck with the classic top-load design for his signature Odyssey DGN v 2 Stem, while Odyssey kept to their minimalist approach to aesthetics.. Built from 6061-T6 aluminium that's CNC machined, it utilises a 6-bolt design with upgraded larger size bolt heads. The clamping area features a unique surface contouring pattern that provides superior handlebar grip. section Product Specs TYPE: Top Load REACH: 51mm RISE: 28mm CLAMPING DIAMETER: 22.2mm WEIGHT: 307g (10.82oz)