HK MOTO- 1" Handlebar Risers For Honda Vtx 1800 Tourer Retro Valkyrie Kawasaki Vulcan 900 High Quality Chrome Billet Handlebar Risers Size: Hole Diameter: 2.5cm (1 inch) Min Diameter:3.2cm Max Diameter:4.9cm,Total Height: 15cm,Height from bottom to center of hole: 13cm ,Pull Back: 3.8cm ,Bottom Thread Mount: 0.5 inch Coarse x 13 (13 threads/inch) Bolt ,Color: Chrome ,Condition: 100% Brand New ,Quantity:1 Pair (2 PCS),No include install instructor,