The fastest and quietest diamond blade on the market. A clear favorite among professionals – precise – 12 mm turbo segment – even 16 times quieter – for cutting concrete, reinforced concrete, bricks, hollow blocks, granite, and natural stone. Arbor hole: 22.2 mm. Marcrist is a British-German company focused on the development of diamond technologies. The result is powerful diamond cutting blades and wet core drills that stand out for their innovation and design. Marcrist products have received numerous awards, including for the use of the highest quality synthetic diamonds and the noticeable noise reduction that significantly enhances work comfort.