ITEM NAME:20x Oil Drain Plug O-Ring Kits For Motorcycle Description: Material: Rubber Outside diameter: Approx 15mm Inside diameter: Approx 12mm Thickness: Approx 2mm Fit for . Package Includes: 20 Pieces O Rings Note: Please allow 0.5-1 inch difference due to manual measurement.(1 inch=2.54cm) Please check the size measurement and the picture carefully before making.Find many great new & used options and get the best deals for 20x Oil Drain Plug O-Ring Kits For Motorcycle at the best online prices at !