Makita X-LOCK 4-1/2 In. x 7/8 In. 40-Grit Type 29 Zirconia Angle Grinder Flap Disc (3-Pack) - Power Townsend Company
X-LOCK - Up to 5x faster accessory changes
Makita 18V LXT Cordless BL 4.5/5 in. X-LOCK Paddle Switch Grinder Tool Only with Bonus X-LOCK 4.5 in. Cer/Gran Cutting Blade XAG26Z-E-07397 - The Home Depot
Makita 18V LXT® Lithium‑Ion Brushless Cordless 4‑1/2" / 5" X‑LOCK Angle Grinder, with AFT®, Tool Only - Amazon.com