One-for-Most: Includes 1PC 4 Way sillcock key of 4 sizes:1/4"(6.35mm), 9/32"(7.14mm), 5/16"(7.93mm), 11/32"(8.73mm), sufficient for most situations Premium Material: Made of durable steel, keys are not easy to break and remain sturdy in the harshest environments; nickel plating of the surface effectively improves the...