4CW and 4CCW GemFan Master Series 5045 (5.0 x 4.5) Bull Nose Tri Blade. Dino Blades Master Series 5045 (5.0 x 4.5) Bull Nose Tri Blade. Dino Blades Material: Plastic Composite Hubs: 5mm, Shape: Bull Nose Includes: 4 CW Black/Dino and 4 CCW Black/Dino Authorized GemFan Retailer. Direct from Factory.