Features Precise Angle Guidance: This 15 degree pocket hole jig features an accurate scale, making woodworking projects easier and enhancing precision in your tasks Durable Aluminum Construction: Made from high-quality aluminum alloy, this tool offers Features: 1、HARD DIAMOND: The abrasive block is made of excellent diamond material with smooth and high hardn 2、APPEARANCE TYPE: Diamond grinding shoes are fan shaped 3 cylinder teeth, with 9mm through holes, tool head is 10mm high, grit number is 30 3、WEAR RESISTANT AND LOW NOISE: Diamond grinding shoes are produced by exquisite technology, which is incisive, wear resistant, , poss long service life, with high grinding performance, low noise, stable structure and excellent performance 4、HIGH WORK EFFICIENCY: The concrete disc saves time and effort, and is of great help to industry and daily life 5、WIDE APPLICABLE: Coating disc shoe is suitable for all concrete grinding machines with high grinding efficiency and is an important hardware grinding fittings Specification: Item Type: Diamond Grinding Shoes Material: Diamond and alloy steel Use: Uneven ground grinding, floor paint grinding, concrete polishing, floor paint removal, etc. Model: Black grit 30 Through Hole: Approx. 9mm / 0.35in Tool Head Height: Approx. 10mm / 0.39in Package List: 3 x Diamond Grinding Block Package List 3 x Diamond Grinding Block