1Pcs M3 M4 Thread Half Hole Metric Stainless Steel Ø5 6 7 8 9 10~50mm Drilling Balls Female Thread Blind Hole Smooth Ball Bead

1Pcs M3 M4 Thread Half Hole Metric Stainless Steel Ø5 6 7 8 9 10~50mm Drilling Balls Female Thread Blind Hole Smooth Ball Bead

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