TSProf is the manufacturer of the most famous Russian knife sharpener.

Shapton is the Japanese waterstone manufacturer who makes the hardest sharpening stones. In contrast to almost all of the other brands, Shapton stones remain tend to remain flat longer and so must be dressed much less often than the others.

Sigma Power, the sharpening stone manufacturer in Japan, has designed these premium stones especially for tough-to-sharpen high alloy steels. Sigma Power is not exactly a common name outside of Japan, they are held in high regard with their rapid sharpening and ease of use. When using these stones, one can easily see it working, and they have a feel while sharpening remarkably like a natural water stone. In contrast with resin-magnesium or cement bound stones, these Select II stones have no binding material.

Poltava Diamond Tools produces a wide range of diamond and CBN wheels and tools used for the making and sharpening of tungsten carbide and high-speed steel tools; for grinding and polishing tungsten carbide, heat-resistant, alloy-treated and stainless steel, glass, ceramics, silicon, refractories, gem stones and other materials; for cutting tungsten carbide, glass, marble, granite, quartz, and ceramics; and for drilling (boring) glass. The plant has been manufacturing top-quality diamond tools for the machine building, glass, electronic, and woodworking industries since 1966.

In the past few years, Hapstone sharpeners have become extremely popular in Eastern Europe. The team of young engineers has created a line of knife sharpeners combining high quality, rich features, and competitive pricing. Hapstone continues to develop its product range by creating innovative accessories and abrasives.

Naniwa is a Japanese manufacturer of sharpening stones for industrial and home use, diamond tools for processing stone and other materials, sandblasting systems for stone engraving, and a full range of products related to abrasion, with over 60 years of experience, dedication, and innovation. Thanks to Naniwa's constant efforts to bring quality and service to ever-higher levels, when it comes to anything related to abrasion the company can offer the most advanced easy-to-use products to the professional or home user.

Venev Industrial Diamonds (VID) is one of the Russia’s leading producers of synthetic diamonds. For over 30 years, the plant has produced a wide range of diamond tools, as well as high-quality synthetic diamond powder for the past 20 years. Modern equipment and highly developed processing technology allowed the plant to introduce its products to the world market in 1995. VID offer a wide range of metal, metalloorganic and organic bonded diamond tools, as well as diamond paste, diamond powders and micropowders.

Norton. The birth of the sharpening stone industry in the United States dates back to 1823 in New Hampshire. A farmer discovered that stones in his pasture were ideal for sharpening scythes and axes. This excellent deposit of mica schist became the foundation for the Pike Company – the first supplier of commercially available natural sharpening stones in North America. As time went on, the company expanded its original product offering to include over twenty varieties of natural stone, including the Arkansas line. Quarried from the novaculite deposits near Hot Springs, Arkansas, these stones soon replaced mica schist as the...

Gritomatic is not just an online shop. This private brand is a collection of high-quality, custom-made sharpening products. Gritomatic offers natural and synthetic stones, empty blanks and leather.

Dan's Whetstone stocks and produces nearly 300 natural Arkansas products. Dan's Whetstone singularly cuts and hand finishes each stone. Each stone passes through many quality inspections during production to ensure that the customer receives the best possible stone available. Within the various grades of stone there are nine classification or variations. Many things, including certain applications, types of items being honed, desired finish or polish and personal preference may call for a specific variation of stone. Dan's Whetstone Company owns and controls several quarries that will supply the next four generations or more with 100% real natural Novaculite rock for quality...

BORIDE Engineered Abrasives has developed and manufactured abrasive products for nearly 50 years. Precise process management, fact-based problem solving and extensive material science are important parts of Boride foundation. Stable, good quality, modern production techniques and good service make Boride one of the most attractive brands in the sharpening stone market. Boride stones were originally designed for the polishing of dies and molds, but are widely used to sharpen knives on Edge Pro Apex sharpeners.