1. Material: brown corundum, plastic/metal 2. Mesh number: 80 3. Thickness: about 6mm for plastic models, about 7mm for metal models 4. Shank diameter: about 6.35mm 5. Size: about 5x5.5 cm/piece for plastic models, about 5x5.6 cm/piece for metal models 6. Weight: about 70g/piece for plastic models, about 84g/piece for metal models
