Wide Applicability for Angel Grinder：This grinding wheel can fit almost all brand 5 inch angle grinder,such us Bosh,Makita,Dewalt and so on. Application:This grinding cup has double row segments design and good for grinding concrete and field stone no matter wet or dry. Highly Quality Material：Durable and reliable material makes this grinding wheel has a longer working times. Air Holes Design:Under the air holes designed,it can keep the grinder cups cooler and reduce wear and tear. Wet/Dry Use:This cup can be used under dry and wet working environment and more convenient for your working.