Functions: The maximum torque can be up to 25 kg / cm (7.4 V). High-precision copper gear with hard anodizing for better accuracy and longer life. CNC aluminum center shell improves heat dissipation and ensures the servo motor can run well. Waterproof, made of first-class material ensure the longevity of the products. Digital servo with good performance, which can be widely used in mechanical arms, climbing cars and remote control toys. A great choice for university professors and students who are interested in developing software for robot parts. Adapted for RC hobbyist to bring you different experience and enjoyment. Specification: Item name: 25KG digital servo Main material: aluminum, copper Motor: core motor Pulse Width Range: 500 2500 μsec Working temperature: -20 -60 Working voltage: 4.8 - 7.4V Working speed (4.8V): 0.19 sec / 60 Operating speed (7.4V): 0.16sec / 60 Torque (4.80 V): 21 kg / cm Torque (7.4V): 25 kg / cm Working frequency: 1500 μs / 330 Hz No-load current: 200mA / 300mA Operating degree: 180 Bearing type: 2BB Size: 4x4x2cm Weight: 69g Package Information: Size: 6.2 x 5.2 x 3.8 cm Weight: 87g Package list: 1x25KG digital servo 1 x 25T servo arm. 1 x set of parts