Switchboard wrench with stepped square hole type 5590

Design: Made of zinc die-cast, cross-shaped. With 1/4" plastic adapter and double-bit recess 1 x 7 mm/cross recess PH 2 on a chain.

With step-like inner square 6?7?8?9 mm, outer square 7; 8 mm, outer triangular 9 mm and square radiator valve wrench 5 mm.