The Irwin Diamond Drill Bit delivers professional-grade drilling performance engineered for fast, precise cutting in all grades of hard and soft tiles. The 8mm diamond-tipped design features a raised diamond grit edge for accurate starting in hard surfaces without requiring a guide. The tough brazed diamond grit ensures extended cutting life and consistent performance. The reverse spiral design forces water towards the cutting head, maintaining optimal diamond temperature for increased cutting speed and prolonged tool longevity. The integrated auto slug ejection slot enables continuous, uninterrupted cutting operations. Drilling with water further extends the tool's operational lifespan while maintaining cutting efficiency across demanding applications. Features & Benefits: Raised diamond grit edge enables precise starting in hard tile without the need for a guide. Tough brazed diamond grit delivers fast cutting and extended tool life. Reverse spiral design forces water towards cutting head, keeping diamonds cool for increased speed and longevity. Auto slug ejection slot allows continuous, uninterrupted cutting operations. Water drilling compatibility further extends tool lifespan and maintains cutting efficiency. Suitable for professional tiling, bathroom installations, kitchen fitting, and general construction applications requiring precision drilling in hard and soft tiles. Diameter: 8mm.