Based in Sheffield, England, the UK's cradle of engineering excellence, Durham Duplex is a world leader in the design and manufacture of high performance machine knives and industrial razor blades. The range incorporates both standard and custom-made products. Durham-Duplex is both a family owned business and a global company that maintains the ability to deliver any cutting edge required by their customers anywhere in the world. It remains firmly grounded in Sheffield with 2 large factories and a warehouse and is very proud to be Made in Sheffield. The addition of a Flooring division in 2011 has increased the product range that still includes the original Duplex blade which, now made with a TiN or TiCN coating, is still requested by some old soldiers for their faithful safety razor.