These are 55mm (2.2inch) Blade Propeller Propeller for 6x15mm, 7x20mm 8.5x20mm Coreless Motor DIY Micro Quadcopter. The propellers with 0.95mm mounting hole can be firmly mounted onto 1mm 4-axial motors.

Their smooth surface can greatly decrease the wind resistance during the flight. Therefore, the Propellers can rotate in high-speed easily when reliably mounted on the quadcopter.

Besides, the propellers are made of high-tenacity material and thus can sustain crashes. You can have these 4 propellers, or let’s say 2 pairs (red and black) for your mini-copter just to take off, or hold them as spare parts for replacement.

Applications

 1. Suitable for 90mm-150mm DIY Micro Quadcopter Frame Kits
2. For 1mm shaft diameter Carbon Brush motor N20, M20, N30
3. For 1mm shaft diameter Coreless motor 7*16mm, 7*20mm, 8.5*20mm also compatible with 6*15mm brushed motors. 

Features :

1. Durable plastic construction
2. Strong and lightweight
3. Quick to Release
4. Also Quick to Attach.

Package Includes :

2 x 55 mm CW Blade Propeller (One Red+ One Black).

2 x 55 mm CCW Blade Propeller (One Red+ One Black).