50 Piece Flush Mount Black Hole Plug Assortment for Auto Body and Sheet Metal Quantity 10: 1/4" Quantity 5: 3/8", 1/2", 3/4", 1", 1-1/4", 1-1/2", 1-3/4", 2" Plugs fit sheet metal up to 1/10" thick. Made of durable black plastic. Made in USA.