One of my favorite jacks. This jack is sturdy, well made and crazy reliable.
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.
If you're building pedals to sell you shouldn't waste your time with cheap jacks. They're one of the parts that get the most abuse and needs to be well made if you want to keep your customers happy.
3 pole open 1/4'' jack, 3 contacts, with washer and nut, panel thickness 3.5 mm, with 0.205" faston tabs