Containing both spanners and ratchet units, this set combines to make square drive ratchets to be used with standard sockets (sold separately). With a flexi-head, they are the ideal product for reaching awkwardly placed nuts as well as more general purpose fastening. manufactured from chrome scandium steel with a mirror finish and supplied in a handy storage case, this 13 piece set is the economical way to be prepared for any task. Features and Benefits • Supplied in a heavy duty fitted storage case to allow you to easily organise, store and transport your set • Manufactured from chrome plated vanadium steel making it a highly durable product • Mirror finish makes for an easy wipe clean product as well as looking aesthetically pleasing • Flexi-head allows you to reach awkward areas as well as making storage easier • 13 piece set is the cost effective way to ensure you always have the right tool to hand Typical Applications • Suited for use when loosening and tightening nuts, making it the ideal product for professionals such as mechanics, engineers, plumbers, electricians, construction workers and skilled DIY enthusiasts Standards • Conforms to ASME B107.6 Notes • Set Includes: • Flex head ratchet combination spanners: 10, 11, 12, 13, 14, 15, 16, 17 and 19mm • Quick release square drive adaptors - 1/4" SD (x10mm hex); 3/8" SD (x13mm hex); 1/2" SD (x19mm hex)