Specification Material: Quality alumina oxide & Flocking Size: 140mm/5.5'' x 90mm/3.5''(L*W) Colour: Red detail sanding pads Back Technique: Hook and Loop Number of Holes: 5 Holes Grit: 40 Grit Features: 1.Hook and loop sander sandpaper backing makes sandpaper changes quick and easy. 2. Mouse sander sandpaper is made of aluminum oxide abrasive for durability. 3.5 dust extraction holes reserved for 140 mm detail sanders. Mouse sander pads keep surfaces clean while working and help improve sanding efficiency. 4.Sandpaper sheets are used on metal, wood, rubber, artificial stone, glass, leather and other materials 5.Your satisfaction is the most important thing to us. No matter what problem you encounter, we will solve it for you. If you don’t like the LOLOLE detail sander pads, you can return them within 30 days for a full refund as per Amazon guidelines. Package Included: 40 Grit mouse sander sandpaper 50pcs Warm tips: 1. The sizes are all hand-measured, please allow a slight error. 2. Due to the different color settings of the monitor, the color may be slightly different from the online picture. Thank you for your understanding. 3. Please keep away from children.