Brand: Allstar Performance Manufacturer's Part Number: ALL18662-50 Part Type: Washers Product Line: Allstar Performance Countersunk Washers Automotive Fittings Part Number: AAF-ALL18662-50 UPC: 848238049435 Washer Outside Diameter (in.): 1.00 in. Washer Inside Diameter (in.): 0.25 in. Washer Material: Aluminum Washer Color: Natural Inside Diameter Chamfer: Yes Hardened: No Quantity: Sold as a set of 50. Description: Allstar Performance countersunk washers are designed to allow the socket head fasteners to install flush with the surface, creating a smooth, finished appearance. They have many uses, including mounting roofs, spoilers, side skirts, and replacing sharp-edged fasteners inside of the cockpit. The washers are manufactured from aluminum and come in your choice of black or natural finishes.