HobbyStar HCS-4521 High-Torque Digital Waterproof Crawler Servo, RC Truck, 1/10, 1/8

The HobbyStar HCS-4521WP servo features a fully waterproof design and massive-torque (444oz/in @7.4V) for the ultimate crawler servo. All-steel gears for reliable operation and an aluminum center-case to aid in cooling and add strength this is a perfect servo for crawling rig.    Specifications: Speed @4.8V: 0.16 sec Speed @6.0V: 0.13 sec Speed @7.4V: 0.10 sec Torque @4.8V: 287 oz/in Torque @6.0V: 347 oz/in Torque @7.4V: 444 oz/in Pulse/Frequency: 1500µ/330Hz Dimensions: (LxWxH) 40.5x20x37.5mm Weight: 58g Bearing: Dual ball bearing Gears: Steel Motor: Digital Coreless Input Voltage: 4.8V-7.4V Output Shaft: 25T spline Wire Harness Length: 260mm