8 Pcs DAL 5040 (5.0 x 4.0) Tri-Blade.Black. 4CW and 4CCW. Special Poly Carbon Glass Injection Material DAL Props 5040 Tri-Blade: Special Glass + PC Injection Holds up to most impacts. Will fit most 150mm to 300mm mini quadcopters. Hubs: 5mm, Shape: Normal 4 CW Black, 4 CCW Black Authorized DAL PROP Retailer