Specifications: Material:HSS / Diamond / Resin Dimension: Resin cut off discs Outer diameter 32mm Inner diameter 3mm Thickness 1mm HSS circular saw blades: Outer diameter 22/25/32/35/44/50mm Inner diameter 6.35mm Diamond cutting wheels: Outer diameter 22mm Inner diameter 3mm Weight: 145g Package: 20 * Resin cut off discs 6 * HSS circular saw blades 10 * Diamond cutting wheels 2 * Screwdrivers 6 * Mandrels Warm Tips for Usage: When using resin cut off discs, please insert the discs into the end of mandrels as much as possible, and the rotation speed should not be too fast, so as not to cause the broken rod and the curved rod. It is forbidden to be surrounded by others. Please take safety measures. The discs are thin and fragile products. Try to keep the discs perpendicular to the items to be cut when cutting. Pay attention to the strength during installation to avoid breaking discs. The situation of breaking discs will decrease with the proficiency. Try not to shake your hands, keep your hands steady, and the cutting strength is stable, so they will not be broken! Practice makes perfect. When using HSS circular saw blades, the rotation speed should be slow, and please insert the blades into the end of mandrels. Because the center of gravity of the front end is much heavier, at high speeds, inertia will change the track! Therefore, the mandrels should be clamped in place. Otherwise, the machine rotation speed is high and it is possible that the mandrels of the saw blade are bent, causing unnecessary loss and damage. When using diamond cutting wheels, the screws on the mandrels should be tightened, and the electric grinder speed should not be too fast. Please take safety measures.