Push-in socket according to DIN EN 61386-1 / DIN EN 61386-21, for producing straight butt connections between plug-in pipes and straight butt connections between socket pipes / plug-in pipes, very high corrosion resistance. for plug-in pipe: IESR ... E3, ... E5 for socket pipe-fm: FM-MR ... E3, ... E5 for pipe-Ø: 50 mm Length: 96 mm Surface: bright Material: stainless steel, material no. 1.4571 Fintech model no. : IESM 50 E5