I have used hundreds of these I/O types over the years. While they are plastic, they are used for most applications because they work well. I've made prototype circuits with them, made goods, and repaired guitar amps with them. I don't understand the criticism from other reviews because I've made circuit boards to use these connectors and never had a problem. If they were being used to replace an existing board I would suggest measuring it first to get the correct part if it was too big.
Universal Electronics Accessories Organizer Bag - Waterproof Portable Cable Travel Gear Carry Bag (L, Black/Pink)
27 Review
Large Waterproof Cable Organizer Bag For Travel, Universal Electronics Accessory Holder, Portable Gear Carry Case For Cables - Black
28 Review
Protect Your AirPods Pro In Style: Filoto Rose Gold Silicone Case With PomPom Keychain For Women And Girls
20 Review
2 Pack GLCON EVA Carrying Cases - Small Electronic Case For Earbuds, Earphone, Charger & More - Shockproof Exterior & Portable Storage Pouch Bag - Blue
24 Review