brand new and high quality Features: This grinding cup has double row segments design and good for grinding concrete and field stone no matter wet or dry. Durable and reliable material makes this grinding wheel has a longer working times. Under the holes designed,it can keep the grinder cups cooler and reduce wear and tear. Specification: Type: Grinding Wheel Material: Diamond, Alloy powder Applications: Angle grinder, stone, concrete, wall, floor Features: Polished, polishing stone, double row, polished, high hardness, durable, tool Dimension: 180mm: app.18cm/7.09in 150mm: app.15cm/5.91in 125mm: app.12.5cm/4.92in 115mm: app.11.5cm/4.53in 100mm: app.10cm/3.94in Color: Golden Quantity: 1 Pc Note: 1.Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you! Package includes: 1 Pc x Grinding Wheel