Updated version of Tom Dugan�s signature DGN top load stem Special surface contouring and a larger bolt head spec for superior handlebar grip Six bolt clamping configuration CNC machined 6061-T6 aluminum 28mm rise BMX Threadless 1-1/8` 51 22.2 0? Blk AL6061-T6UPC/EAN/GTIN: 630950918690