1 in Drive, 3-7/8" 6 pt SAE Socket, 6 Points, Ampco Safety Tools, Mfr#: DW-1D3-7/8

Nonsparking Socket, Socket Size 3 7/8 in, 6-Point, Aluminum Bronze, Natural, Deep, Hand, Drive Size 1 in, SAE, Impact Rated No, Standards FM Approved, ASTM A342