Ruko HSS Bi-Metal Hole Saw - 51 mm Diameter: 52 mm; inches; A2/A6/A7 Mounting Bracket. Maximum cutting depth 38 mm. HSS cutting teeth. Special steel body. Variable tooth pitch. Right-hand cut. Recommended for unalloyed steel (up to 700 N/mm² hardness), light and non-ferrous metals, plastics, lightweight and fiberboard, plywood, and
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