Outside Diameter: 5 mm Height: 10 mm Made of 304 stainless steel, good rust and durable. APPLICATION: Strong and are great for both indoor and outdoor use. Quantity: 20 PCS Note: It does not include other things, the color is based on the first picture, and the other pictures only show the effect Due to the differences between different monitors, the picture may not reflect the actual color of the item. Due to manual measurement. Please allow deviation. Thanks!