Features: 100% brand new. Durable diamond coated grinder heads. Suitable for use in grind, shape and finish with precision for the glass, ceramics, tile, brick, plastics, wood, fiberglass, stone, rock carbide, gold, platinum, silver, metals. Fit your hand drill, drill press Rotary tool with a 3mm collet. Specifications: Grit Size(US): 120. Shank Diameter: 3mm(1/8in). Head Diameter: 3mm(1/8in). Overall Length: 70mm/2.75in. Plated grinding sand part of a long: 30mm/1.18in. Material:Boron nitride. Shape:M trigonometric tip. Package List: 5pcs x grinding rods .
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