Please note that this IS NOT the magic spring used in my YouTube tutorials - unfortunately, I have been unable to find a reliable supplier for that one. This one is the one I have been using since February of 2018 - it is slightly larger than the one seen in my YouTube tutorials.
IMPORTANT UNBOXING INFO: When your Magic Spring arrives, it may be fused into a single piece. This is completely normal. Simply grab the very end of each side and pull outwards until the entire spring is unraveled.