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Feature
high quality
Description
The length of product is so long , so it may not be so straight ! if u mind ,don't buy it ! Pitch:1mm Lead :1 mm Pitch : 2mm Lead : 2mm (single-head,nut turn one circle,screw forward 2mm) Pitch : 2mm Lead : 4mm (double-head,nut turn one circle,screw forward 4mm) Pitch : 2mm Lead : 8mm (four-head,nut turn one circle,screw forward 8mm)