I was having an annoying alignment struggle the other week with my sixshooter when I realized these were the only pullies I owned NOT made by @Janux-esk8. I never liked the vex pullies so I asked Marc if he would help me out with some 58t POM pullies that don’t need spacers to sit flush on the rim. So here ya go, in case you thought there were only 2 options out there, now there are a bunch of options 
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I need these pulleys. 12mm belts like to skip with my big gut riding 
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@Janux-esk8 killing it my dude! I can vouch that these POM pulleys are great. Marc is open for customizing as well so that’s a plus.
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I’d recommend 3d printing the spacer from thingiverse as well if you like to swap between pneumatics and urethane. Otherwise no spacer will give you added space for motors
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