Ryobi stripped piece. I got a miter saw for free because they couldn't get this piece off to change the blade. Neither can I though haha. I tried pb blast and channel
RYOBI ONE+ HP 18V Brushless Cordless 7-1/4 in. Circular Saw Kit with 4.0 Ah Battery, Charger, and (4-Piece) Replacement Blades PBLCS300K1-A067401 - The Home Depot