Features: These Propellers have set the gold standard in the small class Multirotor community. Known for their durability great balancing and superb hub centering and expendable price. This is the perfect upgrade for any small multirotor. Specifications: Color: Black Length: 12.7cm/5.0" Hole Size: 5mm Hub Dimensions: 6mm thick 11.5mm diameter Material: ABS Package Include : 1 pcs CW (Reverse) 1 pcs CCW (Normal) 2 x Adapters