Copper Washer O-ring Assortment For oil drain plugs 10 pieces each of the following sizes: inside dia. x outside dia. x thickness 5 x 10 x 1 mm, 6 x 10 x 1 mm, 7 x 10 x 1 mm 8 x 12 x 1 mm, 10 x 16 x 1 mm, 10.5 x 17 x 1.5 mm 11 x 17 x 1.5 mm, 12 x 20 x 1.5 mm, 12,5 x 20 x 1.5 mm 14 x 18 x 1 mm, 14 x 20 x 1.5 mm, 15 x 20 x 2 mm 16 x 22 x 2 mm, 16.5 x 24 x 2 mm, 17.5 x 24 x 2 mm Genuine Neilsen Product