ProFit concrete hole saw 68 mm. The drill has diamond segments placed so that the dust is effectively discharged from the work area. Can also be used in concretewith reinforcement. Can be used with a rechargeable or conventional wired machine, high rpm is recommended.Drills for dry cutting in concrete up to Strength Class 30 as well as hard-burned bricks.With the unique Drill and drop system that makes it easy and quick to get the plug out and changebetween different dimensions.