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4mm Flat Head Cylinder #220
Professional Grade Burs for Carving. Sintered burs will last 5 to 10 times longer than diamond plated burs and up to 100 times longer than various types of silicon carbide or aluminum oxide mounted abrasive points. All burs are on a 3/32" (2.35mm) shaft. All shafts measure 35mm excluding the diamond portion. Maximum Speed Rating: 25,000 RPM.
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