ECO-WORTHY Dual Axis Solar Tracking System: 12 Volt 6" & 12" Stroke Linear Actuator with Track Controller Kit & Mounting Brackets Do More Efficiency Complete solar tracking kits: 12V 6" & 12" Linear Actuator & Remote Controller & Mounting Accessories. Linear Actuator: 12V motor has gearbox and is rated to hold up to 330 lbs when not moving. An all-metal housing and is water-resistant and sealed against dust for rugged durability. Dual axis controller: control dual axis linear actuator to make the solar panel to follow the Sunlight, keep the solar panel always face the sunlight. Smart weather detector, stop working in cloudy day. Material: Mounting pole is made from galvanized iron tube. Monting arms are all made from Aluminum 6061. Perfect tracking mounting kit for solar panel system, improve solar power efficiency.