The overall table vise is made of high hardness brass. The left side is made of hard steel. The left side 0.2-1.2 holes can clamp different kinds of minute, second, hour hand needle tube. It can also be clamped on various kinds of extendes or sprung watch crown and for operation.The design is very practical.The 3, 5 and 7 holes on the right side can hold different sized watch crown.
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