1.This heatsink is for 150A 160A ESC,4028 double ball cooling fan has super strong wind,and the rotation speed can reach 20000 rpm, which makes it have excellent heat dissipation effect; 
2.The fan covers are made of aluminum alloy, with good thermal conductivity, CNC machining, beautiful and durable;  
3.Power supply 6-12V,It can be powered by the equipped 2S and 3S lipo balance connector,with a circuit breaker, which can be closed when not in use; 
4.Fit for Hobbywing MAX6 MAX8 ESC,and also for ARRMA 6S which use Firma™150A Smart ESC,such as:1/7 INFRACTION 6S、1/7 FELONY 6S 1/7 MOJAAVE 6S etc.  
5.The package includes:4028 Heatsink w/Fan Cover*1 Set; 2S-lipo Balance Connector*1; 3S-lipo Balance Connector*1;