Motorcycle 1" Handlebar Risers for Honda VTX 1800 Tourer Retro Valkyrie Kawasaki Vulcan BLK Motorcycle High Quality Black Billet Handlebar Risers Min Diameter:3.2cm?Max Diameter:4.9cm?Hole Diameter: 2.5cm (1 inch) 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 Condition: 100% Brand New ,Quantity:1 Pair (2 PCS),No include install instructor Fitment:  All Motorcycles with 2.5cm/ 1" bar diameter  All Harley Davidson ,Cruisers ,Choppers ,Metrics with 2.5cm/ 1" bar diameter All Victory cruisers with 2.5cm/ 1" bar diameter