70-Piece Crescent Professional Tool Set. The 70 piece professional tool set has a wide selection of tools to get you started. The tools come in a high impact plastic case and all tools meet ANSI/ASME specifications. Inside the tool set is a 3/8 in. and 1/4 in. drive ratchet with 1/4 in. and 3/8 in. x 3 in. extensions; 32 SAE and metric sockets; 8 SAE hex key set; 23 SAE and metric combinations wrenches and a multi-bit DuraDriver screwdriver with 12 bits.