By far the best made jack anywhere. This jack is sturdier, better made and more reliable than any other jack I've ever tried. I've messed with the generics everyone else carries. Don't waste your time with cheap jacks. They're one of the parts that get the most abuse and the need to be well made.
The Neutrik's metal is much THICKER than everyone else. It's also much HARDER. It won't bend out of shape and lose grip over time. You know when you're tightening the cheap jacks and they just pop apart like confetti? This won't happen anymore. The cup attaching the shaft to the rest of the housing is way more FIRM than all the others. They can take tons of abuse.
Don't mess with crappy jacks anymore. These are the best.
2 pole open 1/4'' jack, 2 contacts, with washer and nut, panel thickness 3.5 mm, with 0.205" faston tab