Standard Size: Compatible with model P1300-part-13-key fits both 3/8-inch and 5/16-inch hydrant/outdoor hose bibb shut-off valves total length of 3.23 inches. Versatile Use: Suitable for operating wall-mounted outdoor hose bibbs, various faucets, valves, and outdoor hose valves. Durable Construction: Made from high-quality stainless steel offering excellent hardness and toughness features an anti-corrosion and rust-resistant finish for a longer service life. Convenient Operation: Extended handle design facilitates easy insertion and provides ample operating clearance. Highly Portable: Compact and lightweight can be attached to a keychain. Weight: 0.044 lbs.