Need to open a triangular lock? This PATIKIL set gives you three of these handy little triangle spanner keys. They’re made from zinc alloy with a chrome-plated silver finish, so they’re sturdy and should last. Each key is about 63x57x14 mm (2.48x2.24x0.55 inches), and the triangle hole in the middle measures 14x7 mm. They’re super lightweight, so you can toss one in your bag or tool pouch. They even have a small rope hole, so you can put it on a keychain or lanyard and not lose it. What are they for? Lots of things! Think elevator or lift emergency door locks, electric cabinet panels, gas valve shut-offs, electric meter boxes - basically any fixture that uses a triangular socket. Important note: Just make sure the size matches your specific device before you buy, as it won’t fit every single triangle valve out there (especially some older radiator types). For the price, having a 3-pack is great - keep one in the garage, one in the car, one in your toolkit.