28.6mm=1 1/8" 3pc Fat Handlebar Risers Blue with +/- Adjustable Offset 28.6mm to 28.6mm rise 11/16" = 17.46mm for fat bar twin wall bars, 6082 T-6 billet aluminum hardened chromoly steel bolts + 10mm forward -10mm back offset Yamaha KTM Kawasaki Suzuki Can Am Honda MX ATV 1" 1/8  handle bar risers.....Condition is "New".     BJR#1860