SpecialHybrid Acme style nut and screw design, no brake needed.SpecialSpecialSpecificationsSpecificationsValueAnti-rotationNoBrakeIntegral Holding BrakeMaterialCopper; Steel; Zinc; Aluminum; PlasticScrew TypeBallTemperature Max150 °FTemperature Min-20 °FUPC Number883680011814Voltage12 VdcWeight12 lbDimensionsDimensionValue[S]44 inPerformancePerformanceValueDuty Cyle50 %Load, Dynamic1200 lbfLoad, Static, Max3000 lbf