Can thread various hand-sewing needles from thin needles to thick needles.Threading needle holes.Color:PinkApplicable Needle Thickness: 0.51 to 0.89mm(oval hole)Body Case: PolycarbonateButton: ABC resinMechanism Parts; ABS resin, polyacetal, stainless steelRound hole needle and embroidery needles cannot be used.Some needles and threads cannot be used depending on the makers.