5 super thin 105mm diamond cutting discs. Suitable for dry and wet cutting. Diameter 4"/105mm, segment height 10mm, thickness segment size 1.2mm, bore: 22.23mm/7/8" Reinforced steel core prevents bending, wobbling and vibration during cutting. < p>Suitable for cutting very hard materials: porcelain, granite, marble, concrete, sandstone, tiles, soft and ordinary building materials, etc.