【SIZE】Diamond Grinding Wheel:Diameter 125mm, Bore 22.23mm-7/8" Arbor, 5mm deep turbo segments,Steel Core:3.5mm,Grits:40/50 【Turbo Continuous Rim】Turbo Row Design for more flat, persistent and smooth grinding for concrete, granite, stone, marble, tile, masonry and some other construction material 【Strong Body】Strong steel body provide stable cutting performance and good finishing on the Lower cost to save your money 【Air Holes Designed】air holes designed to aid in maintaining and cooling the cutting pattern and reducing wear 【Application】Designed for builders and tilers to do light tidy up work. Designed for use with angle grinders for cured concrete and hard stone grinding. 5" Turbo Row