The product is a 7/16" Grade 8 High Collar Split Lock Washer in Zinc Yellow finish. It has a thickness of .15 inches, a hole size of 0.444 inches, and an interior diameter of .444 inches. Made by BoltsandNuts.com, this washer is designed for industrial applications and comes in a pack of 1 unit. Its durable Grade 8 material ensures high strength and reliability in various fastening setups.