Feature: 1. PROGRAMMABLE: Our coreless motor has high torsion, programmable, programmable PWM digital amplifier, 32 bit MCU with 14 bit magnetic encoder. 2. WIDE OPERATING VOLTAGE: The coreless servo motor has wide operating voltage DC6 to 8.4V, dual ball bearing supported output shaft, IP67 rated waterproof housing. 3. ALUMINUM HOUSING MATERIAL: The housing of our servo motor is made of aluminum alloy material, aluminum heat sink housing, black color, with high accuracy helical gear. 4. IP67 LEVEL WATERPROOF: The servo motor's connecting wire plug is JR plug, pulse width is 500 to 2500usec, dead zone is 2usec, IP67 level waterproof housing. 5. APPLICABLE SCENARIO: Our 58KG coreless servo motor is perfect for RC RC cars, robots, robotic arms, etc. Specification: Item Type: Servo Shell Material: Aluminum Alloy Color: Black Product Size: Approx. 40 x 20 x 38mm / 1.6 x 0.8 x 1.5in Working Voltage: 6V-8.4V Working Speed 0.17sec/60°At 6.0V 0.14sec/60° At 7.4V 0.12sec/60° At 8.4V Stall Torsion 42.0kg cm At 6.0V 49.0kg cm At 7.4V 58.0kg cm At 8.4V Connecting Wire Plug: JR Plug Pulse Width: 500-2500usec Deadband: 2usec Applicable: RC Remote Control Car, Robot, Robotic Arm, Etc.. Package List: 1 x Servo Motor1 x Metal Servo Arm2 x Plastic Servo Arm4 x Screw Barrel4 x Rubber Pad7 x Screws