Abrasive: Aluminium oxide
Used for common use of grinding and polishing metal, non-ferrous metal, iron, cast iron, and sanding weld joint. T27 flat faced discs are better on flat surfaces and will produce a more consistent finish. T29 includes a built-in angle to assist with grinding complex work surfaces, seams and inside corners.
Abrasive: Aluminum Oxide; Zirconium Oxide
Used on angle grinders or static machines, suitable for grinding, polishing, cleaning and sanding on tubes, irregular surfaces of non- ferrous metal.