Founder: Jason, born in 1955 in the UK. He started to come into contact with butterfly knives in 1985. He was deeply attracted by this kind of knife and began to study various techniques and exercises for using butterfly knives. Now he has collected them. Nearly 100 butterfly knife styles. In order to better spread the butterfly knife culture around the world, Jason decided to open a factory to produce butterfly knives and use his experience to design and produce amazing products. In 1995, he founded the first factory in China and opened the butterfly knife brand Jason. The factory gradually changed from a small workshop of 500 square meters to a large butterfly knife factory of 2,000 square meters. Now we hope that more people will understand the story behind the butterfly knife. In order to allow all friends who love this kind of knife to communicate in a friendly manner, we have opened knuckleknife.uk to sell to the UK.

We offer over 100 products, most others are designed exclusively by or for us, we have exported our knives to the USA and are proud of the impact our knives have made in the USA. In the coming days, we have been working hard to enable more countries to use our products and to reward our guests who trust us with ever-increasing designs and services.