10PCS Multi-sized Mini Diamond Saw Blade Cutting Discs for Drill Rotary Tool Feature: new and high quality. Made from strong carbon steel, durable and firm. Ideal for cutting hard materials like wood, plastics, laminates, aluminium, various metals, precious stones, jade, etc. Suitable for use in carpentry and crafts. Material: diamond, carbon steel Disc Size: 20mm/25mm/30mm/35mm/40mm/50mm Thickness: 1mm Hole diameter: 2mm Color: Silver Notes: Due to manual measurement, there may be 2-3mm error. And item color displayed in photos may be showing slightly different on your computer monitor since monitors are not calibrated same. Hope understand. Package included: 10x Diamond Cutting Discs 2x Mandrels