Started with the Cajun Injector, threw mine away after last year I discovered the vet syringes sold by Butchers, as mentioned by Smokin Hoggz. Those are pretty nice and you cant beat the price. But then Todd introduced my to the tube-feed automatic syringe. WOW is all I can say, these things rock. Since he let the cat out of the bag, I will say that I found mine here:
These guys also sell individual leur lock needles with aluminum hub. Most vet places only sell needles in boxes in of 100. Here's the 18ga needles Todd mentioned earlier:
Mark aka Earl
Slower Lower BBQ
(2) 22.5" WSM, (1) 18.5" WSM, (3) 22.5" Weber Kettles, Super Fast Red
Thermapen, Stoker, Airline Cart!