Item Type:GripsMaterial Type:RubberColor Classification:Blackproduct name:Donuts hand setsMaterial:Advanced rubberApplicable models:MultipurposeProduct Specifications:Left inner hole diameter: 2.2cm aroundRight inner hole diameter: 2.4cm aroundinstallation method:After installation is recommended wet water、 or with a little detergent or lubricating oil.Product use:Anti-slip、 comfort grip、Long drive hand will not hurt.