STEELMAN 95647 16mm 1/2-Inch Drive 12-Point Triple Square Tamper-Proof Transmission Drain Plug Bit Socket for VW/Audi/Porsche DURABLE - Made from durable chrome vanadium steel for dependable strength that can handle hard use and resists corrosion SPECIALLY DESIGNED - Custom designed bit socket for use on Volkswagen, Audi, Porsche, and other European manufacturers PRECISION MACHINED - Bit head is precision machined for an exact fit STURDY - 1/2-inch drive size allows you to apply more torque to free stubborn fasteners and plugs SECURITY COMPATIBLE - 12-point triple square or XZN socket has a hollow tip to allow use on security-style fasteners