This waterproof, steel-geared servo is perfect for Monster Truck and most Scaler and Crawler applications where a slightly taller servo can be fitted. Precision steel gears, stump-pulling torque, and waterproof to IP67 standards (operates for up to 30 minutes in water up to 3 feet deep)."Plus" series servos feature Soft Start and Sanwa SSR compatibility.Features:Center aluminum with nylon composite top and bottom caseOperates directly on 8.4v without the need for an external BECPrecision ball bearingsSpecifications:Torque @ 7.4V - 46.0 kg / 638.8 oz-inSpeed @ 7.4V - 0.14 sec / 60 degTorque @ 8.4V - 52.0 kg / 722.1 oz-inSpeed @ 8.4V - 0.13 sec / 60 degWeight: 83g / 3.27ozDimensions L x W x H (mm): 40.6 x 20.7 x 46.15