As a newer person to airbrushing, I picked up the Harder and Steenbeck Ultra because of it pitch of being good for beginners. Which I think it totally is, and I loved it. I was just always frustrated with the cap that came with it making it impossible for me to do any "back flowing" to help mix paint, or clean the airbrush, which I could do in my very first airbrush which was a $20 Harbor freight special. So I went looking HOPEING i might be able to find parts that would work, that would help me not have to drop $300 on an Evo, great tool, just more than I want to spend right now. I was so happy to find SprayGunner!! Super reasonable prices, incredible fast shipping, super helpful support, and it fits and WORKS PERFECTLY!! 10/10 HIGHLY recommend!! WHEN I am ready to move up to the next level of airbrush, I already know where I'm buying from.