4-1/2 40G Flap Disc

4.5", 40 Grit, X-Lock Arbor, Type 27, Flap Disc, Fixed Mount & High Quality Zirconia Grit, Features Snap On Mounting & Wheel Release Lever, The Wheel Mounts Properly Without The Need For A Spanner Wrench Or Flange Nuts, Backward Compatible With Standard 7/8" Arbor Mounts, Durable Material Specially Formulated Zirconia Grit Provides For More Durability & Faster Stock Removal, Application Focused Designed Specifically For Fast Material Removal & Use With Small Angle Grinder, Precision Manufacturing Optimized Flap Design For Less Vibration & Improved Grinding Speed.