Diamond grinding disc 230 mm x 22.2 mm UNIVERSAL for professional use. Professional quality Special design: The APlus diamond discs are made of high-quality steel to withstand impacts and high temperatures. SINTERED TURBO. Long service life 230: for concrete, marble, granite, terracotta stones, plaster, sandstone, limestone, sandstone, natural slate, stone, masonry, screed Disc 230 mm, bore 22.2 mm Machine: angle grinder, concrete grinder