ITEM NAME:Screw Cap Set With CNC Screw Flange For Description: Package : Seat Bolt Tab Screw Mount Knob Cover Set Fitment: Universal Fit for Motorcycles with 5/16" Mounting hole diameter, Perfect for Harley. Material:Made of alloy material,durablility and water resistance ,fine workmanship. Functionï ¼Å¡Mounting to top rear seat ,not work with solo seats or side mount seats. Feature:Quick and easy to remove the seat instead of wasting time to find a screwdriver to take it off.Easy to mount or release. Specification: Material : CNC Alloy Size(L ):Approx.32mm/1.26inch Rim hole diameter: 5/16" Package Includes: 1 Piece Seat Bolt Tab Screw Mount Knob Cover Kit Note: Please make sure you will get the perfect item before order. Please allow 1~3mm errors due to manual measurement. SKU: DMO0012583067021813.1 Piece Seat Bolt Tab Screw Mount Knob Cover Kit. Material : CNC Alloy. Functionï ¼Å¡Mounting to top rear seat ,not work with solo seats or side mount seats. People always bought together with.