• Zirconium flap disc for descaling, derusting, weld preparation, weld cleaning and general surface preparation.• More durable than normal sanding discs.• Abrasive flaps are attached to rigid disc with epoxy adhesive - does not require backing pad.• Depressed centre discs suitable for electric and air tools.• Size/Bore: ø115/22mm.Zirconium flap disc for descaling, derusting, weld preparation, weld cleaning and general surface preparation. More durable than normal sanding discs. Abrasive flaps are attached to rigid disc with epoxy adhesive - does not require backing pad. Depressed centre disc suitable for electric and air tools.• Zirconium flap disc for descaling, derusting, weld preparation, weld cleaning and general surface preparation. • More durable than normal sanding discs. • Abrasive flaps attached to rigid disc with epoxy adhesive - does not require backing pad. • Depressed centre disc suitable for electric and air tools. • Size/Bore: ø115/22mm. • Model No. FD11540Technical Spec