I thought one of the small cheap injectors (made in Ukrainian) would be a great starter injector and it did work ok for awhile.Then it was time to replace the orings.I went everywhere in town trying to find the right oring with no luck.Harbor Freight,local hardware stores and even Tractor Supply.Nobody had anything that worked.I didn't like the push on design anyway on that injector.I decided to buy one from basstackle that screws on and love it.They also sold orings for those injectors and I bought several replacement orings in which case seem to last forever.i would recommend anyone looking to get into injecting baits to stay away from cheap made injectors and start out with a good quality injector.It is safer and if you are like me you will love making your own baits and will likely get deeper into this hobby than you intended to.