30 Piece, Crescent&tmreg. Brand, Professional Tool Set, All Tools Meet ANSI/ASME Specifications, High Impact Plastic Case, Wide Selection Of Standard & Deep Sockets In The Most Common SAE & Metric Sizes, Consists Of: 3/8" Drive, 72 Teeth Quick Release Ratchet Drive, 3" Extension, 6" Extension, 13/16" Spark Plug Socket, (16) 12 Point Sockets: 5/16", 3/8", 7/16", 1/2" 9/16", 5/8", 11/16", 3/4", 9MM, 10MM, 12MM, 13MM, 14MM, 15MM, 17MM, 19MM & (10) 12 Point Deep Well Sockets: 7/16", 1/2" 9/16", 5/8", 11/16", 12MM, 13MM, 14MM, 16MM, 17MM.