This decision is made by determining how the abrasive will be used by the individual. Abrasives are sold in forms such as sheets, large/small discs, belts, and large/small rolls. Selecting the right form is determined by whether the abrasive will be used for hand. sanding, applied to a large disc sander, attached to a small hand grinder, or installed on a large belt sanding machine. Sanding of concave shapes probably requires round or cylindrical shaped abrasives. Flat or convex shapes probably require flat abrasives.
Yes, we have 100% test before delivery