Drain plug key set includes: 7x hex sockets (8 - 9 - 10 - 12 - 13 - 14 - 17 mm), 9x square sockets (5/16" - 3/8" - 7 - 8 - 10 - 11 - 12 - 13 - 14 mm), 1x spline socket M16, 1x torx socket T45, 1x triangle socket 10 mm, 1 socket 10 mm Special drain plug socket designed to remove of drain and filler plugs on engine oil sumps, back axles, differentials and gearboxes on most modern vehicles. Compatible with BMW, Citroën, Fiat, Ford, Honda, Lancia, Mazda, Mercedes-Benz, Nissan, Peugeot, Renault, Saab, Toyota, Vauxhall/Opel and Volkswagen. The sliding T-bar is the perfect tool when you need added leverage and torque. The delivered 3" & 6" extension bar is designed to access the deep, hard to reach drain and plugs on differentials, back axles, etc. This Set is constructed from High-Grade Chrome Vanadium Steel with a Chrome-Plated Finish for Durability and Corrosion Resistance.