I know the Protank IIs are a 510. So any 510 drip tip should work. I don't know on the removable tip Protank II minis tho.
My only reason is sometimes when driving I have to hold the pv with my teeth and the metal tips hurt. Other than that I really don't care if its metal or plastic.
My only reason is sometimes when driving I have to hold the pv with my teeth and the metal tips hurt. Other than that I really don't care if its metal or plastic.