Surface polishing for wood， metal， paint， organic glass， etc.Weld seam reconciliation， and removal of surface machining marks.Especially for metal， wood， organic glass surface processingSpecifications:Material:ore sandType:6 inch 17 HoleDiameter:150mmSand grain size:P80，P120，P180，P240，P320，P400，P500Application: with 6 inch vacuum cleaner for automobile paint and atomic dust， or other objects to dry grinding.Features:1.Fiber paper back based long life.2.Strong cutting force， good abrasion resistance.3.Easy loading and unloading of the back baseAvoid sand blocking.4.Avoid sand blocking.Package include:10 x sandpaper