Savox jumbo digital servo 40kg/0. 17s@7. 4v savox jumbo sized servos for all heavy duty applications such as 1/5th scale cars, large boats and aircraft. Built to handle load and power these 7. 4v compatible, digital servos feature all steel metal gear train, full ball bearings, heatsink case body and heavy duty horns and mounts. Features combines leading edge technology with super high 12 bit (4096) resolution and unique steel gears super light-weight high speed, incredible efficiency, and low power consumption extremely strong metal steel gears ensure long-life and durability the full aluminum case design not only looks good but also allows for cooler and smoother operating temps ideal for 5th scale vehicles specifications dimensions (mm): 65. 8x30x57. 4 weight (g): 200 speed (@6. 0v sec/60):. 21 torque (@6. 0v oz-in): 416. 6 speed (@7. 4v sec/60):. 17 torque (@7. 4v oz-in): 555. 5 gear: metal bearing: 2bb case: aluminum middle 15 tooth spline frequency: 250-333hz pulse width frequency: 1520 (sav-sv0236mg)