APC B9x4.5MR-B4 PROPS SET-4

APC B9x4.5MR-B4 PROPS SET-4 BLACK Multi-RotorQuad-Copter Bundle (9x4.5MR and 9x4.5MRP)Package contains four propellers (2 standard rotation and 2 reverse rotation)Use LPAR06E adapter ringsIncludes four sets of rings from LPAR06E (1/8", 4mm, 5mm, 6mm, 5/16")         Pitch (inches) 4.5 Propeller Diameter (in.) 9 Hub Diameter 0.65 in. Hub Thickness 0.34 in. Shaft Diameter 1/4 in. Product Weight 0.39 oz. Color Black