ITEM NAME:30Mm 8 Holes Diamond Circular Diamond Cutting Wheel Cut Off Discs Coated Ro J1H7 30Mm 8 Holes Diamond Circular Diamond Cutting Wheel Cut Off Discs Coated Ro J1H7 Great Material:The circular saw blade is made of high quality diamond, the superior hardness construction allows it can use for a long life. Feature:diamond discs teeth are very sharp which ensure fast and fluent cutting,it is perfect for stainless steel and other metal cutting ,it is great accessories for power tools. Usage:ideal for cutting hard materials like wood, plastics, laminates and aluminium, etc. Superior Quality:tougher diamond makes sure the cutting circular saw blade stays be sharp for a long time. 5. Grit: 150# Quantity:package comes 10 pcs 30mm 8 Holes diamond cutting circular saws with 2 pcs mandrels which will fit for many electric rotary tools and your need. Wide applications: mini diamond cutting wheel is good for cutting gemstones, glass, ceramics, porcelain, tiles, car.Great Material:The circular saw blade is made of high quality diamond, the superior hardness construction allows it can use for a long life. 1 x 10 circular saw blades and 2 mandrel. Compatibility: the diamond cut off wheels are compatible with the majority of rotary and air tools, electric grinder.