Tom Dugan's signature DGN v 2 stem is a classic top-load, 6-bolt design. Along with other new Odyssey stems, the bolt heads have been upgraded to a larger size & the clamping area features unique surface contouring for superior handlebar grip. section Product Specs TYPE: Top Load REACH: 51mm RISE: 28mm CLAMPING DIAMETER: 22.2mm WEIGHT: TBC