I'm offering what appears to be an used RIDGID K-750 Drain Cleaning Machine Corded For 3" to 8" Pipe Auto 1/2 hp. 

The unit has scuffs, scratches, and residue which suggests use. I don't work with these machines personally and so understand little about them - I did plug it in and there was a green light, but when flipping switches nothing happened. Maybe this is normal but I'm unsure. 

Because I can't guarantee function, this will be a no reserve, no return auction.