You can buy them without the locking ring, or remove it. Then they are legal.
Questionable about legality, and certainly dangerous, they don't have a spring, so they can really easily close on your fingers whilst buttering your baguette.
Just keep the lock ring and don't threaten anyone, and have a list of the things you use it for as a defence in the unlikely event of you being asked why you have it.
And don't take it to the pub, school, airport and stuff. You'll be fine!
Questionable about legality, and certainly dangerous, they don't have a spring, so they can really easily close on your fingers whilst buttering your baguette.
Just keep the lock ring and don't threaten anyone, and have a list of the things you use it for as a defence in the unlikely event of you being asked why you have it.
And don't take it to the pub, school, airport and stuff. You'll be fine!