Are online at identical quality much cheaper than in the pet trade. Buys you several of them to save P & P. For if the throat Bank's whistle, also the magnet away. But: The magnet alone can go pins. The ratio Replacement Collars spare magnets in cats utensils shelf should therefore be 1: 2. I've already bought a few times: "Nylon Cat Collar with reflective safety lock" on Amazon.