Hiwonder 20kg デュアルボールベアリング高トルクフルメタルギア 180°デジタルサーボ、アルミケース、金属サーボホーン、ロボット用金属ブラケット20kg large torque. 20 kg·cm (277.6 oz·in) @ 6.6V. Dimension: 40*20*40.5mm(1.57*0.78*1.59inch)Full metal gear. it's better for accuracy, service life has been greatly increased.Aluminium Case. Enhance the heat dissipation, ensure that servo motor can work wellCome with 2 metal servo horn and 2 meal bracket. 180 degree rotation. Controllable angle range from 0 to 180 degreesDual ball bearing: one is the driving ball bearing, one is the assistant ball bearing(support role)