This Sealey Combination Spanner Set features 23 pieces suitable for daily professional use. The spanners are made from cold-stamped, slim-style Chrome Vanadium steel with a satin polished finish for corrosion resistance. They include an open-end and a 12-point WallDrive® ring combination. The set covers metric sizes from 8mm to 19mm and imperial sizes from 1/4" to 7/8". The spanners have a minimum length of 100mm and a maximum length of 250mm. The set is supplied in a 25mm EVA storage tray and comes with a lifetime guarantee. The overall dimensions of the set are 375 x 284 x 40mm. Model Number: AK63256.