View 3 of 2pcs 400mm Tr8X4 Lead Screw with T8 Brass Nut for 3D Printer Machine Z Axis(Acme Thread, 2mm Pitch, 2 Start, 4mm Lead)

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View 1 of 2pcs 400mm Tr8X4 Lead Screw with T8 Brass Nut for 3D Printer Machine Z Axis(Acme Thread, 2mm Pitch, 2 Start, 4mm Lead)View 2 of 2pcs 400mm Tr8X4 Lead Screw with T8 Brass Nut for 3D Printer Machine Z Axis(Acme Thread, 2mm Pitch, 2 Start, 4mm Lead)View 3 of 2pcs 400mm Tr8X4 Lead Screw with T8 Brass Nut for 3D Printer Machine Z Axis(Acme Thread, 2mm Pitch, 2 Start, 4mm Lead)