This professional standard hexagon key set from expert by facom contains 9 keys in popular sizes between 1.5mm 10mm in diameter'. '.strtoupper('s')pherical heads on the base of each key can be used for tightening or loosening at an angle when working in restricted spaces'. '.strtoupper('t')he set comes supplied in a handy plastic flip out case, with size markings for easy organisation rapid key selection'. '.strtoupper('f')eatures and benefitsbull spherical heads on the base of each key for working at an angle in restricted spacesbull high quality manufacturing for excellent performance and long lifebull plastic flip out case keeps the keys organised in the workshop or when on the go.bull size markings quick easy selection of the correct key size.specificationsbull quantity 9 piecesbull sizes 1.5, 2, 2.5, 3, 4, 5, 6, 8 10mmbull overall weight 350g