Counter Rotating Propeller 1045/1045R (CW + CCW) for Multirotors. Compatible with quadcopter, hexacopter and octocopter in various combinations of pusher and puller propeller. Compatible with our 2212 brushless motors with prop adapters. It comes with multiple diameter fixture rings so it can fit most of motors with various prop adapters and shaft diameters. Sold in pair only.