... some cases many modules (curved and straight conveyor sections) can be driven from one drive ... beautiful.SpecificationsThe diameter of the roller have all kinds, see following:Roller conveyor dia: 25.4mm, 38 ... steel, Carbon steel, aluminum, PVC,Installation method: spring loaded, female/ Male thread, full mortise.Capacity per roller: 40kgCapacity per meter: 400kg Stainless steel Gravity roller conveyor ...