It has a clutched 5.7 amp motor, a simple forward and reverse system with grease zerked fittings, a poly drum and well built mobile and stable stand. It will handle pipe between 3-10 inches (ours is set for 3-6 inches) and the heads are easy to change: we like it.
The rest is here:
Ridgid K-7500 Drain Cleaning Discussion and Demonstration