Kraft Tool Concrete Groover CF315PF 6 Inch Bronze Hand Tool (1 4 Inch Radius 1.5 Inch Deep Bit Control Joint Finisher ProForm Grip) PTO Generators Equivalent Metric) Extraction Socket Equivalent Metric) Extraction Socket Material Chrome Molybdenum Alloy Steel (Cr Mo) Impact Driver Bit Material High Tolerance S2 Tool Steel Plier Adjustment Mechanism Auto Bite One Handed Automatic Lever Socket Drive Connection Options Internal Square Drive and External Hex Base Extraction Torque Performance Up to 5X Torque Output and 10X Impact Life vs Standard 4 Inch Slab Paving: Slicing 1 inch deep stress relief control joints across 4 inch concrete driveways Kraft Tool 6 Inch Bronze Canadian Deep Bit Concrete Hand Groover and provides non slip control