ITEM NAME:10PCS Car Reinforcement Description: This is a set of 10 washers with screws Screw is made of stainless steel and washers is made of Aluminum Screws are 6mm x 19mm, longer than many others out there. Easy and fast to remove and reinstall the bumper, and trunk / hatch lid Fit nearly every late model vehicle's fenders, core supports, trunk, etc including GM, Ford, Honda, BMW and many others. Specification: Screw Material: Stainless Steel Washers Material: Aluminum Size Chart: Washers External Diameter: Approx. 19mm/0.75inch Internal Diameter: Approx. 6mm/0.24inch Package Includes: 10 Pieces Washers 10 Pieces Screws 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.Easy and fast to remove and reinstall the bumper, and trunk / hatch lid. Fit nearly every late model vehicle's fenders, core supports, trunk, etc including GM, Ford, Honda, BMW and many others. People always bought together with.