Crescent CTK170CMP2 Mechanics Tool Set, 170-Piece Updated version of the best selling CTK170CMP, this new set has a new & sturdier blow mold case as well as new & improved Crescent screwdrivers Contains a carefully selected assortment of hand tools needed for most industrial, mechanical, and consumer applications Set includes 1/4", 3/8" & 1/2" drive tools (SAE & Metric). Drive Type-6 and 12 Point.Drive Tang Size 	1/4 inches, 3/8 inches, 1/2 inches Tools meet stringent new ANSI and ASME specifications and come with a full satisfaction guarantee All tools contained in a sturdy, folding plastic case for easy storage and transport