PFERD Abrasives Grinding bit 609967 - PFERD 44400123, The PFERD 44400123 Corundum Flap is a grinder attachment with a diameter of 20 mm, available in a pack of 10. Manufactured by PFERD, it is designed for precise grinding and finishing tasks. Common applications include surface smoothing and edge chamfering on various materials. PFERD 44400123 Corundum Flap 20 mm 10 pcs Universal coarse to fine Grinding