Flex-i-File Abrasive Sheets This product has the ability to smooth and polish an array of modelling surfaces and seams including plastic, wood, or metal mediums. This product can be used wet or dry and is reusable. All grits contained in this package can be washed with soap and water for maximum performance Can be used wet & dry and can be washed with soap & water. Removes flash from resin, plastic & metal castings and mouldings. Smoothes & polishes rough surfaces & seems. Size: 100mm x 75mm ( 3” X 4”) 801 contains : 600, 320, 280, 150 grits 802 contains : 10000, 6000, 1500, 1000 Ultra fine grits .