The Snap-on Radiator Drain Plug Socket, No. RDSF1, is designed to save technicians time during coolant changes on a variety of vehicles. The RDSF1 is versatile and engineered to be used on 2011 to current Ford Super Duty trucks as well as a variety of other Ford vehicles and any vehicles with a blade-style drain valve or drain plug. Due to its compact size, technicians can access hard-to-reach areas and the 1/4" drive and external hex allows the socket to be turned in tight spaces using a ratchet or a 3/4" wrench. The socket is designed to specifically engage drain plugs, minimizing the risk of damage to the drain plug or radiator. The nickel-chrome surface resists chemicals and solvents for long-lasting durability.