Material: Cr-V, size: 3–6mm (1#), 6–8mm (2#), 8–11mm (3#), 11–14mm (4#), 14–18mm (5#), 18–25mm (6#), hardness 48–52 HRC, coarse thread, packed by plastic box.
Material: Cr-V, size: 3–6mm (1#), 6–8mm (2#), 8–11mm (3#), 11–14mm (4#), 14–18mm (5#), 18–25mm (6#), hardness 48–52 HRC, coarse thread, packed by plastic box.
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