Red J2 Aluminum Front/Rear Trunk Bumper Quick Release Fastener+Bolt Hatch Kit Fastener Size: 0.875: (Thick) X 1.0" (Diameter) Hex Bolt Dimensions: 0.75" (Length) X 0.50" (Diameter) O-Ring Fastener Diameter: 1.75" (Flexible) Authentic Products with Logo for Decoration and Recognition Professional Installation Highly Recommended (No Instructions Included)