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Lerkely Butterfly Knife with Unsharpened Blade, Martial Arts Trainer Bailisong Knife Sword, Rainbow Folding Butterfly Finger Knife Trainer, Titanium Butterfly Knife for Practicing Flipping Tricks : Amazon.co.uk: Sports & Outdoors
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6.9′ ′ Thunderbolt Claw Karambit Butterfly Knife Otf Automatic Knife Denfense - China Balisong, Karambat Claw | Made-in-China.com
How should a 14-15 year old convince his parents to let him purchase a trainer butterfly knife if they have already said no? - Quora
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