One pair of heavy duty 6 hole replacement hub cap gaskets. Manufactured from low density material that conforms well to irregular surfaces. Gaskets provide very good crush resistance and meet ASTM 104 requirements. Bolt holes = 6, bolt hole size = 5/16”, bolt circle = 6 3/4”, ID = 5 7/8”, OD = 7 1/2” Replaces: Stemco️#330-3118 SKF️#450799-8 OTR️#HG0118 Application = Stemco hub caps 4195, SKF hub caps 1696, 1399, 1796 Dual Dynamics hub caps 257-P, 255-G