E PAPER BACKING: The thickened E paper backing distinguishes sanding sheet from others in the market; it not easily tear or wearout during work HOOK & LOOP DESIGN: The popular hook and loop design allows for quick fitting; together with the Nylon Buckle back, you have no trouble in your work done quickly and nicely HIGH QUALITY MATERIAL: the grains are made from calcines abrasive aluminum oxide grain, making sure that the most suitable grains are matched with grits of different grades LONGER DURABILITY: the high-strength resin bond system increases the service life of sandpaper packs; the strength test of flannel tensile is over the standard value 1.47N Color: Red Shape: Square Size: 93 x 186mm Grit: 40# 60# 80# 120# Backing: E paper backing Number of Holes: 8 Holes Abrasive Grain: Aluminum Oxide Backing Technique: Hook and Loop Specifications Tolerance: +/- 1 mm Notes: This sandpaper is for dry sanding, please do not use it for wet sanding. Please store the sandpaper packs in dry and ventilated places. Humidity harm its service life. Package Contents: 150* sandpaper Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.