Lightning Round: I don't have a catalyst for this

It's that time again! The Lightning Round bell has rung, and Jim Cramer gives his take on a few favorite audience stocks:

Windstream: "I like a 9 percent yield like everybody else.But I also need some growth and I don't see any growth there. I think it's okay… I'm not crazy about it and I think the upside has been taken."

United Rentals: "There is a tie to oil and gas, but it's not so clear that I would be selling the stock here. Remember that this stock has had a major run. Let the profit taking go on, if it gets below $100 then pull the trigger."

Corrections Corp of America: "The problem is that it is basically a play on states turning over the prisons... I'm not that comfortable with it. It has been hit or miss at certain times if they don't get certain contracts it's been given up. But it has a good yield and it is safe."

----------------------------------------------------------
Read more from Mad Money with Jim Cramer
Cramer says bye-bye to bonds for retirement
Never, ever do this with your 401(k)
Cramer: Don't invest without 3 things
----------------------------------------------------------

Koppers Holdings: "This company is a probable company, doing rather fine ... But let's put it this way: It's an industrial that is hard for people to fathom and they are selling those kinds of industrials right now. I am intrigued by Kopper, but I don't have a catalyst for the carbon business and why it should go higher."

Questions for Cramer?
Call Cramer: 1-800-743-CNBC

Want to take a deep dive into Cramer's world? Hit him up!
Mad Money Twitter - Jim Cramer Twitter - Facebook - Instagram - Vine

Questions, comments, suggestions for the "Mad Money" website? madcap@cnbc.com