T27 grinding wheels are used for polishing material such as steel pipe, armor plate and so on. The work-piece would not be rubified and its surface will become bright and smooth after polished. It is testified that� this product is safe and durable. Size(mm) Inch Max. Speed Pcs/Ctn G.W.(kg) 100x6x16 80M/S 200 22 115x6x22 80M/S 100 14 125x6x22 80M/S 100 18 150x6x22 80M/S 100 24 180x6x22 80M/S 60 21 230x6x22 80M/S 50 27.5