Manufactured from carbon steel with a fully polished finish. This 14-piece Siegen Sealey spanner set covers sizes 27mm to 50mm and is ideal for applications where access is limited. The set is supplied in a half blow moulded tray for easy storage. Drive size is 1/2" Sq. The set includes the following sizes: 27mm, 29mm, 30mm, 32mm, 33mm, 34mm, 36mm, 38mm, 42mm, 43mm, 44mm, 46mm, 48mm, 50mm. Model No. S01109. Features a lifetime guarantee.