Preferred silicon carbide and Kraft paper materials, which can suitable for both wet and dry use. High- performance, durable wet or dry sanding sheets are flexible when used wet and will not fall apart, tear, or crumble while in use. Widely application. Widely applied in musical instruments, automotive, woodworking finishing and. Features - Color: Black. - Material: Kraft Paper, Silicon Carbide. - Size: About 23.00X9.50X0.10cm/.04X3.73X0.04in. - Grit Type: 320; 600; 800; 1200 -Note: The product has color difference, but does not affect the use - the grit is distributed homogeneously, anti- static, wear- resisting and prevents clogging - Efficient and practical, it can be widely used in polishing wood, metal,, glass and so on - The sandpaper grit is silicon carbide that provides abrasion resistance, high efficiency and good effect - easy to operate and does not require too much skill, you can rest assured to use it for polishing - It will not fall apart, tear or crumble off during using, cuts faster and lasts than conventional sanding sheets Package list: 25 x sheet of 320 grit sandpapers 5 x sheet of 600 grit sandpapers 5 x sheet of 800 grit sandpapers 5 x sheet of 1200 grit sandpapers