Photo 1 of 2pcs 550mm Tr8X8 Lead Screw with T8 Brass Nut for 3D Printer Machine Z Axis(Acme Thread, 2mm Pitch, 4 Start, 8mm Lead)

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Photo 1 of 2pcs 550mm Tr8X8 Lead Screw with T8 Brass Nut for 3D Printer Machine Z Axis(Acme Thread, 2mm Pitch, 4 Start, 8mm Lead)Photo 2 of 2pcs 550mm Tr8X8 Lead Screw with T8 Brass Nut for 3D Printer Machine Z Axis(Acme Thread, 2mm Pitch, 4 Start, 8mm Lead)