I have a pressure pot but the tips are junk (ceremic) and they don't see the size I need individually... so I have to buy a pack and throw the other 3 away (got it from Tractor Supply but its the same thing that HF sells).

So I'm looking for a sandblasting gun where I can either buy the tips I need individually or in carbide.

I looked at Eastwoods 3 pack of .138 inches... anyone use those? What size grit does it allow? Right now I have switched to 60/80 grit black beauty because thats what TSC had on the floor.