Kossel 680mm 20x20 reinforcement

This is a "2 in 1" upgrade for Any cheap Kossel/Delta with 20x20x680mm long vertical extrusions/rods. These printers often comes with low quality rods, and getting 3 good quality replacement should cost you from about 25 to 60 bucks depending on where you buy/order them.

With this upgrade, you not only get better prints thanks to your printer being enhanced with 3 smoother rods, but you also stabilize your printer a lot with reusing the original rods for stability.

The spared old rods wil