920 is the Largest Grooving Capacity in its Class | Patented Depth Setting Gauge - Easy and accurate groove depth setting does not require adjusting the protective guarding. | Built-in Pressure Gauge - Helps operator monitor hydraulic pressure to control flare and optimize groove time. | Front Roll Set Change-Out - User can switch groove roll sets quickly and easily | Easy Adjust Support Legs - Helpful when leveling the groover on uneven ground