This pull up bar came with my T3 power rack and I am very pleased with its performance.
The diameter and gauge of tubing is on par with more expensive pull up bars, such as those from Rogue Fitness. It is true that the finish isn't as nice as the textured black power coats I've seen on other bars, but it holds up just fine to daily use. I do not have any issues doing weighted chin-ups with an extra 90lbs hanging from my 185lb body.
If you want to buy a bar and make your own pull-up station, you can't beat this one for the price. If you find the finish too smooth use chalk to improve your grip.