General description The GRAFF 68mm hole saw is designed for drilling blind and through holes in concrete, masonry, and silicate brick, making it ideal for electrical outlets, rosette plates, and various mounting procedures. Technical specifications Diameter: 68 mm SDS Plus Adapter: 110 mm (M22 thread) Center Drill: 8x110 mm Advantages Durable steel construction with ventilation holes for effective dust and chip removal Asymmetrical teeth made of primary tungsten carbide hard alloy with welded cutting segments Designed to prevent overheating during use Usage The GRAFF carbide hole saw is intended for impact drilling with a hammer drill, rotary hammer, and drill.