Is it illegal to purchase an aluminum knuckle duster bottle opener

Is it illegal to purchase an aluminum knuckle duster bottle opener? I'm in Canada and the product would be coming from the states. - Quora

Military Brass Knuckle Duster - Bottle Opener Knuckles - 1918 Brass Knuckles

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EDC Bottle Opener Double Ring Keychain – Honey Badger Arsenal

Is it illegal to purchase an aluminum knuckle duster bottle opener? I'm in Canada and the product would be coming from the states. - Quora

Beware of “Knucks,” “Novelty Bottle Openers,” and Other “EDC Pocket Tools”

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