40mm Sanding Disc Roll Lock Pad 60Grit 80Grit Abrasive Sandpaper Metalworking. High quality polishing sandpaper Size: 40mm. Grit size: 60 / 80 Features. High cutting performance and durability.Surface finishing, deburring, rounding and polishing for metal processing categories such as sheet metal painted parts for automobiles and motorbikes, metal stamping parts, die-casting moulded workpieces, instruments, bicycle parts, textile machinery, medical equipment parts, tools, knives, pen making parts, daily hardware, plumbing equipment, stainless steel cutlery, stainless steel plates, golf heads, electric vacuum ware and other products. Choose your grit size from the drop down menu above.