If you're looking for a small, portable and efficient jack, this is the best one on the market. The design makes it so lifting a heavily loaded bar requires almost no leverage, whereas a traditional mini jack requires quite a bit of force.

This is def a classic. Forged in the depths of Mordor by Buddy Caps himself, one bar to rule them all! However one thing about classics is that as newer things come out, they tend to not be as appealing to the newer generation. While this bar is great, the thicker collars and 28.5mm diameter tend to produce more whip under heavy load, which is not ideal for my training style. Still a great addition to any gym.

These are a novelty but cool nonetheless. Super beefy. The attach in an annoying way with a strap looped through the handle and each end having its own carabiner. Something like the Nice Like Mike handle hack is more ideal with these.

Most people might look at these and think they're not necessary, but if you have a fixed set of DBs, you can basically double their use and halve the footprint by adding either the 1.25 or 2.5lbs plates. I have a set of 5-100dbs in multiples of 5 and the 1.25lbs plate set now gives me all the inbetweens (ex: 12.5lbs, 17.5lbs, etc).

Other companies make this, but the ABMAT one is the gold standard. They updated the original design to use their hard molded foam which makes this thing indestructible.

This is the one that started it all for most people. It's great for overloading and mine has held up great over the years.

These were my daily drivers for a few years. Just as good as the regular collars but the locking feature was really nice and not a pain at all. Mine ended up breaking after a few years however, so be warned.

These are really great collars. Priced well and hold well. I have found they do tend to break over time however and these days I prefer aluminum ones.