Gemfan 1220-4 31mm 4-Blade Whoop Propeller (8 Pack — 4CW+4CCW)

The Gemfan 1220-4 is a 31mm 4-blade propeller designed for 65mm micro whoops and indoor FPV drones. With a 2.0-inch pitch and a lightweight 0.31g profile, it delivers improved thrust and cornering grip compared to standard 3-blade alternatives, making it well-suited for precision technical flying in tight indoor spaces.

Key features

• 4-blade geometry: Provides extra blade surface area for responsive throttle control and quick corner recovery on micro whoop frames.

• 2.0-inch pitch: Generates strong lift and immediate punch-out power without overloading micro brushless or brushed motors.

• Polycarbonate construction: Withstands repeated indoor collisions against walls, ceilings, and furniture without shattering or deforming.

• Dual shaft compatibility: Offered in both 0.8mm and 1.0mm centre hole sizes to fit a wide variety of micro motor shafts.

Specifications

• Diameter: 31mm (1.2 inch)

• Pitch: 2.0 inch

• Blade count: 4

• Shaft options: 0.8mm, 1.0mm

• Weight: 0.31g

• Material: Polycarbonate (PC)

• Centre hub thickness: 5mm

Select the 0.8mm shaft variant for 0702, 0703, and 0802 brushless micro motors with 0.8mm shafts. Choose the 1.0mm option when building with 0802, 0803, or 0804 brushless motors featuring 1mm shafts, or standard 6x15mm and 7x16mm brushed motors. Verify that your 65mm whoop frame ducts support 31mm propellers prior to installation.