Without having to stop the vehicle, the Onspot Automatic Tire Chain System offers the traction of a single set of conventional snow chains at the flip of a dashboard switch. An electric switch mounted in the cab provides 12 volts to an air solenoid mounted in the vehicle's frame rail. Designed for ice, packed snow and up to six inches of snow, the chain system eliminates wheel well damage from broken conventional chains. Other benefits include more hauling force, faster acceleration and a reduced stopping distance. DOT-approved in all 50 states.

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