CRAFTSMAN 256-Piece Standard SAE and Metric Polished Chrome Mechanics Tool Set. Low profile ratchet: up to 25% thinner head for access in tight spaces (1/4″ dr & 3/8″ dr only as compared to cmmt81747, cmmt81748, & cmmt81749). 72-tooth ratchet: delivers 5 degree arc swing. All in one mechanics set: contains a full assortment of sockets, ratchets, wrenches, and specialty bits for automotive enthusiasts and mechanics, packed in a durable 2-drawer box. Convenience: drawer bumps help keep drawers in place when not in use. Corrosion resistance: full polish chrome finish.