Established 1961. Manufacture industrial diamond products. Specialize in drills for ceramic drilling, form diamond wheels, routers for ceramic grinding and special turning tools for various shaping. Sales offices in principal U.S. cities.

Manufacture superabrasive grinding products using state-of-the-art engineering, manufacturing and inspecting techniques to ensure on-time delivery.

Established 1920. Design and manufacture industrial diamond tools using natural and synthetic diamonds. Used for dressing, turning, boring, milling and drilling. Special tools designed for specific application upon request. Call for prices.

Manufacture and distribute precision grinding systems and related diamond abrasive products.

Manufacture a wide range of superabrasive tools, supplies and equipment for grinding, lapping, polishing and honing of difficult-to-machine materials to close tolerances. Process development services are offered.

Manufacture a full range of diamond products, core drills, milling tools, saws, blades and grinding wheels for technical ceramic and refractory fabrication.

Manufacture and market coated-abrasive, bonded-abrasive, superabrasive and nonwoven-abrasive products. Sell products under the Norton Abrasives, Winter Abrasives and Amplex Abrasives brands.