I used these to modify my CR-10s 3D printer to synchronize the z-axis lead screws. I attached them at the top of the machine and connected them with a belt and tensioner (3D printed). Works great!I used a 760-2GT-6 belt to connect the pulleys.
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High-Quality 3-Foot Black Ethernet Patch Cable 5-Pack by Amazon Basics: Snagless RJ45 Cat-6 for Reliable Internet Connections
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