20A ESC BLHeli Opto Quad Pack

Key Features
4 Pack of Thrust ESCs
Pre-Flashed with BLHeli
Active Dampening and One Shot activated
20A Continuous with 25A (10sec)burst
Failsafe protection, over-heat protection and low voltage cutoff
2-4s battery, Opto (no bec)
Only 6.8g each
Signal Frequency: 20-500Hz
PWM Frequency: 18KHz
Size: 24.5 x 12.9 x 5.2mm