Motorcycle 1" Handlebar Risers For Harley Cruisers Choppers Metrics Victory Chromed new Motorcycle High Quality Chrome Billet Handlebar Risers new Size: Hole Diameter: 2.5cm (1 inch) Min Diameter:3.2cm Max Diameter:4.9cm,Total Height: 5.5'' (13.5cm),Height from bottom to center of hole: 9cm ,Pull Back: 1.5'' (3.8cm ),Bottom Thread Mount: 0.5 inch Coarse x 13 (13 threads/inch) Bolt ,,,,,