Buy Kyocera (Kyocera) Former Ryobi Circular Saw W-1910 617501A [Soft grip that fits your hand without slipping, making it easy to work and ideal for DIY] Saw blade diameter 190mm Maximum cutting
RYOBI Circular Saw How to install the blade - YouTube
RYOBI 7-1/4 in. x 24 Teeth Carbide Thin Kerf Circular Saw Blade (8-Piece) A067401-A067401 - The Home Depot