ZEC® Discs are manufactured with an exclusive process which is designed to give the user full reliability in terms of quality, performance and safety. ZEC® SEMIFLEX is manufactured with a 2.0mm thick fiber backing support and multiple layers of first-rate abrasive. ZEC® SEMIFLEX are designed to be mounted on a supportive backing pad. They acquire their flexibility after a few minutes from beginning of working. Therefore the flexibility shall never be tested by hand in a cold condition. The flexibility permits a reduction in vibrations that are commonly experienced with the use of grinding wheels. The lower vibration reduces operator fatigue and increases productivity. To achieve the best efficiency, users should only exert a slight pressure during working. ZEC® SEMIFLEX also feature perforated holes which eject materials and stops the work piece from overheating. ZEC® SEMIFLEX are proudly Made in Italy. ZEC Silicone Carbide discs are designed for fast grinding and removal of thick adhesive-type coatings from concrete surfaces. The discs remove the coating, then grind the concrete surface. They are also great for rust removal from steel surfaces and even barnacles from the hull of boats. Key Features Disc Diameter: 180 mm (7") Abrasive Grit: 36G Abrasive Type: Silicone Carbide Safety Information Maximum RPM: 12,000 (80 m/s) Complies with the following standards: EN 13743 - European Standard Recommended PPE (Personal Protective Equipment): Safety Glasses Safety Gloves Specifications Part Number 66623322078 Brand FLEXOVIT Item Type Grinding Disc