This box set includes 30 pieces of assorted diamond-coated burrs. These burrs are compatible with hand drills, drill presses, and tools like Dremel® and Foredom® with a 1/8" collet. The set features burrs with ball heads in diameters of 1mm, 2mm, 3mm, 4mm, 5mm, and 6mm, with five pieces for each size, totaling 30 pieces.

Each burr has an overall length of 40mm to 50mm (approximately 1 5/8 inches to 2 inches) and a shank diameter of 3mm (1/8"). The burrs are premium quality, diamond-coated in a 120 grit (Medium) and are suitable for working with materials like glass, marble, rock, or jewelry. For optimal results, it is recommended to use water with these diamond tools. Remember to clean the tools after use.