• 75mm, 100 mm , 125 mm 150 mm and so on
• Special design helps prevent clogging and loading
• Will not react with metal because made of non-oxidizing materials
• Safer than conventional wire brushes because made of non-sparking material
• Under normal circumstances lasts up to 6 times longer than conventional wire brushes
• Unit has standard 5/8" thread
• Maximum 6500 rpm
• 

2, Original Du-Pont material

Abrasive grit encapsulated into the extruded nylon filament allows an abrasive nylon brush to perform deburring, edge blending, and surface finishing. Abrasive brushes in power brush or wide face cylinder brush format deliver the flexibility and conformability of a brush, while also imparting the benefits of an abrasive: selection of grit sizes to control finish, and functionality for deburring, cleaning, surface finishing, and edge blending. Abrasive Nylon is suitable for use on a broad range of materials.