1HARD DIAMOND: The abrasive block is made of excellent diamond material with smooth surface and high hardness 2APPEARANCE TYPE: Diamond grinding shoes are fan shaped 3 cylinder teeth, with 9mm through holes, tool head is 10mm high, grit number is 30 3WEAR RESISTANT AND LOW NOISE: Diamond grinding shoes are produced by exquisite technology, which is incisive, wear resistant, durable, possess long service life, with high grinding performance, low noise, stable structure and excellent performance 4HIGH WORK EFFICIENCY: The concrete disc saves time and effort, and is of great help to industry and daily life 5WIDE APPLICABLE: Coating disc shoe is suitable for all concrete grinding machines with high grinding efficiency and is an important hardware grinding fittings