Stahlwille combination spanners imperial af 10 piece set are made from chrome alloy steel chrome plated contents 14 516 1132 38 716 12 916 58 1116 and 34 af stahlwille set of 10 combination spanners af imperial with 15 offset ring end the spanners are drop forged from high grade special steels and chrome plated they have been optimally hardened in continuous furnaces with no scale build up or skin decarburisation and gently quenched in oil the spanners are extremeley strong yet lightweight due