The Skull Custom Kaddy is a metal construction with triple plate chrome. Comes with metric and American standard bolts, Easily Detachable Cup, Chrome spring clip with rubber drink retainer.Mount On: Clutch or Brake Perch Mounting, bolts vertical spacing center to center at 1 1/16" to 1 1/2" apart to accept included Metric and American standard bolts.Fitment: Harley: All Harley models, recommended for models with 6 gallon tanks for optimum tank clearance. Honda: All GL 1500/1800 Models, all VTX 1300/1800 Models, Shadow 750 Aero, Ace & Spirit, Shadow 1100 Kawasaki: All Vulcan 900 Models, Vulcan 1500/1600 including Mean Streak Yamaha: All Road Star & Warrior Models, All Star Models, All Venture Models.