For locking systems in electrical engineering, the supply of gas and water, air conditioning and ventilation systems, industry, technical installations in buildings, etc. 9 different die-cast zinc key-profiles in 1 tool. With detachable chain and snap hook. Zinc die-casted. 172960205 - "Construction" version with plug-in, magnetically held support: catch for locks with profile cylinder hole and male square in steps. With bit adapter for 1/4" bits with magnet. 172960304 - Universal swivel head wrench with four different, rotatable closing heads; three closing heads with double function.