The Craftsman 2 Piece Flex Head Ratchet Set includes a 3/8 and 1/2 drive size ratchet, both featuring a flex head design for added versatility and access to tight spaces. With a lifetime warranty, this set is built to last and provide reliable performance. The manufacturer part numbers CMMT99420 and CMMT99429 ensure quality and compatibility with various tools and equipment. Perfect for automotive work, this set is a must-have for any mechanic or DIY enthusiast.