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√ Drill Guide Jig for Vertical Hole Drilling .
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√ Drill Guide Bushing: 6/8/10mm .
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√ Anodized surface,resistant to corrosion .
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√ This is a set of drill guide tools for the fixation and centering while drilling and woodworking .
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√ Made of Aluminum Alloy 6061 , strong strength and long durability .
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√ Maximum support plate thickness: about 46mm .
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√ Centerlines ensure accurate alignment when drilling into various surfaces .