Thanks for posting that Tony. I never seem to have enough. At that price, it would be nice to have them as spares. They do wear out eventually. I rarely get anything from HF, as it is so hit and miss. Bought four little bottle jacks last year and three of the four leaked down over night; one with nothing on it. Just the weight of the shaft caused it to bleed down. So, when a buddy vouches for something there, I know I can go ahead and purchase. I used to keep up with the HF Fail/Pass thread over on the Garage Journal, but rarely have time these days.
https://www.harborfreight.com/Precis...-Pc-63841.html