This threading aid from Prym is specially designed for threading overlock sewing machines. The set consists of a threader for the upper and lower looper and another threader for the needles. The finely bent spring steel wire with a white plastic handle and a hook is first passed through the lower looper and the thread is clamped in the hook. In this way, the thread can be easily pulled through the eye of the looper. Proceed in the same way with the upper looper. The threader for the needles works exactly like a conventional threader for sewing needles, but it has a long shaft made of spring steel wire and a handle made of blue plastic for optimal handling.