US launch special 2470.30._.1 Spring plunger, maintenance-free, standard spring force, VDI 3004, Colour marking: yellow
US launch special 2470.30._.2 Spring plunger, maintenance-free, increased spring force, VDI 3004, Colour marking: red
US launch special 2470.30._.3 Spring plunger, maintenance-free, medium spring force, VDI 3004, Colour marking: white