i purchased the speed collar for 12v revolution and it works great. i am using the JT slammer harness with the speed pods and i have to say they go to gether well. it is very easy to load my hopper now. all you do is slam your speed pod tube into the hopper and pull it out and your done. it's nice and quick. and if your hopper lid pops open your balls don't fall out
Weaknesses:
it makes your hopper a little bit taller which makes it a bigger target. also it's a little pricey but to much
Conclusion:
though a little pricey the JT speed collar is a very nice add-on for your hopper. it nice to know that you won't lose balls if the lid opens, i mean come on, hasn't that happened to everyone