Attribute Value: 1/4" Drive - 6 pt. Standard: 3/16, 7/32, 1/4, 9/32, 5/16, 11/32, 3/8, 7/16, 1/2" and 4, 5, 6, 7, 8, 9, 10, 11, 12, 13mm, 3/8" Drive - 6 pt. Standard: 10, 11, 12, 13, 14, 15, 16, 17, 18, 19mm, 6 pt. Deep: 10, 11, 12, 13, 14, 15, 17, 18, 19mm, 12 pt. Standard: 3/8, 7/16, 1/2, 9/16, 5/8, 11/16, 3/4, 13/16, 7/8", 12 pt. Deep: 3/8, 7/16, 1/2, 9/16, 5/8, 11/16, 3/4, 13/16, 7/8" and 5/8" Spark Plug Sockets . Names (Page 1)