【4-in-1 Design】: Our CBN grinding wheel has a 1/4" radius on each side, while the width is upgraded to 1.25", easy to grind drills, scrapers and other hollow tools, etc 【Precise Size】：8” diameter, 1-1/4” width, 5/8” inner hole,180 grit 【Save Your Time】: Our grinding wheels have good shape retention and will not deform no matter how long you use them, so you don't need to adjust your machine frequently or dress the grinding wheel 【Reduce Grinder Wear】: This sharpening wheel is nickel-plated on a 6061 aluminum base, which is lighter and easier to handle. It can reduce the power consumption and wear of your bench grinder. At the same time, it has high hardness and corrosion resistance. It can be used with water or dry grinding during grinding 【After-sales】：Our CBN grinding wheel has stable quality and has been exported to most countries in the world. We provide you with a 30 day after-sales guarantee for any problem 4 in 1 CBN Grinding Wheel 8 inch 180 Grit,1.25” Wide,5/8” Arbor,for Sharpening Woodturning Tools、High Speed Steel Tools (180 Grit) Electroplated CBN grinding wheels can process various tools in your warehouse or garage. Compared with ordinary grinding wheels, they can increase your efficiency by three times and save your working time. Our CBN grinding wheels are made of 6061 aluminum substrate with nickel plating, which is lighter and can reach a speed of 3600RPM, giving full play to the advantages of CBN grinding wheels. At the same time, it has the characteristics of corrosion resistance and high hardness, and can be used with water during grinding. The dimensions are accurate, especially the inner hole dimensions. We have undergone various tests before leaving the factory, and they are perfectly matched to your machine without any jitter.