Channellock 39053 Mechanics Tool Set, 171-Piece 1/2, 3/8 & 1/4" drive, 72 gear teeth quick release ratchets Flat panel, full polish SAE & Metric combination wrenches 1/2"", 3/8 & 1/4" drive, chrome vanadium standard & deep sockets SAE & metric hex keys Magnetic bit driver with full range of fastener bits