Woo! These are da Bombs@!! don't waste your money on other servos.. these little things perform as good as HS-55's except that when the gears strip, you simply replace them with a new one because of their low cost! They strip only on really hard crashes just like the hs-55's.. get more of these! i'm ordering another 10 just to keep them! good servo's for any foamie... i use 6 of these on my bipe.