ROTA Dragonfly 18x8.5x5H/100 Plain Silver

• ROTA Dragonfly: This is likely the model or series name of the wheel.
• 18x8.5: This indicates the diameter and width of the wheel in inches.
• 5H/100: This represents the bolt pattern of the wheel, where 5H indicates 5 bolts and 100 refers to the diameter of the bolt circle in millimeters.
• Gun Metallic: This describes the finish or color of the wheel. "Gun Metallic" typically denotes a dark metallic gray color.

In summary, the specification you provided describes a ROTA Dragonfly wheel with dimensions of 18 inches in diameter and 8.5 inches in width, featuring a 5-bolt pattern with a bolt circle diameter of 100mm, and finished in Gun Metallic.