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Pair of M50 motors with propeller DC3V-6V blade two motors

Two short-axis M50 motors + two 75mm long propellers
Motor diameter: 10 MM
Motor length: 25 MM
shaft diameter: 1.0 MM
shaft length: 4 MM

Motor RPM tests without Props
Voltage: 3 V
Current: 0.04 A
Speed: 19000 RPM (no-load speed)
Voltage: 4.5 V
Current: 0.05 A
Speed: 28500 RPM (no-load speed)
Voltage: 6V
Current: 0.08 A
Speed: 37000 RPM (no-load speed)

Parameters with propeller installed:
voltage: 3 V
Current: 0.52 A
Speed: 10500 RPM
Voltage: 4.5 V
Current: 0.95 A
Speed: 13000 RPM
Voltage: 6 V
Current: 1.3 A
Speed: 15000 RPM
Weight: 18 g for single
for CW+CCW weight = 36g