Manufactured from a durable chrome vanadium alloy steel, this ratchet and socket set features a 1/4" and 3/8" driver with and ergonomic soft grip handle for comfort when tackling troublesome fasteners. The 34 piece set features 12 x sockets from 10mm through to 22mm along with a flexible hinge bracket and extensions for working in hard to reach areas. The sockets fit on the flat of fastener ensuring a better grip and helping to prevent shearing as well as featuring an external grip for hand tightening. The driver features a quick release mechanism that secures the socket in place and allows for easy changing at the push of a button. Included in the set are a range of hex, square, Philips and flathead driver bits as well as a 16mm and 21mm spark plug socket. Features and Benefits Manufactured to DIN 3120/ISO 1174 standards Constructed from a hardy chrome vanadium alloy steel for durability Features a 1/4" ratchet and 3/8" ratchet Sockets Dynamic-Drive grips on the flat not the point to help prevent sheering Comprehensive range of 3/8" socket sizes from 10mm to 22mm A range of 3/8" and 1/4" driver bits from 4 to 8mm Comes in a durable HDPE hard case with easy access compartments and a grip carry handle Typical Applications Workshop Automotive Bahco S330 1/4" & 3/8" Drive Socket Set.