Diameter--- 5pcs 4.5"(115mm)rock slab grinding disc ; Cutting Head Thickness: Ultra-thin 1.6mm; Abrasive Width: 30mm diamond grit segment with 22.23/15.875mm (washers not knocked). Versatile Applications---Materials: Rock slabs, tiles, marble, granite, glass, and other hard materials; Suitable for both wet and dry cutting/polishing. Features--- tile cutter blade multi-Hole structure: Enhances chip removal, heat dissipation, and clog resistance. Ultra-Thin diamond blade ensures high cutting precision and extended blade life. Superior Performance---High-Density Diamond Grit: Premium-grade diamonds for maximum hardness & durability. Efficient Cutting: Low wear, smooth operation, and long-lasting sharpness. Speed Range--- Cutting blade Recommended 8,000 RPM (Max 13,200 RPM) APPLICATION-- Can be used for quick cutting and grinding of rock slabs, stone, tiles, marble, granite, glass, etc. DESIGN-- Ultra-thin saw blade design, period sharpness becomes high, multi-hole widening design, conducive to chip removal, increase heat dissipation performance at the same time to prevent clogging, prolong the service life of the cutting and grinding blade. GOOD PERFORMANCE--Preferred high grade diamond raw material, long life, diamonds closely arranged, high density, high hardness and more efficient.