Questions/Help

Do you guys have any info on some decent fittings? I recently got some new tubing and when I tried to put it in, the fitting just couldn't hold it well enough. I thought that maybe some new fittings would help. I found these online but they look exactly like the ones that came on my printer. I assume they are of the same quality. So I was curious, do you guys know of some that are better without breaking the bank? These are $5 and I'd like to stay somewhere around there if possible. I just want something that works decently well.