2 piece, 31.8mm 4130 chromoly, tig welded construction with post weld heat treatingDeep knurled clamping area to prevent slipping with a thicker bar boreAvailable in gloss black or Chrome and 2 heights31.8mm28.35`7.75`2°6°Black4130 ChromolyUPC/EAN/GTIN: 888571115459