This 14 piece set from Snap-on is a must-have for any mechanic or DIY enthusiast. The set includes a ratchet and sockets ranging in size from 4mm to 14mm, with a variety of other sizes in between. The drive size is 1/4in. and the set is designed to work with metric measurements. The brand is known for its high-quality tools, making this set a great investment for anyone in need of reliable sockets and ratchets.