Replacment snaking cable

[drew53813]

I have a ridgid k-375 drain cleaner. I was wondering if anyone can recommend a good place to get a replacement cable. I dont know whats better a 3/8 or 1/2 inch and hollow core vs wire core. I am interested in a 50ft cable. Need something to snake out my 2 inch drain lines and the ocassional 4 inch main line. Thanks

 

[hj]

For sink drains I use a 1/2"x75' left wound wire core, but I would NEVER use it to try to clean a mainline, it would be too small.