The 417 three star round inspection mirror 7.5 long with insulated vinyl grips. The clear-view mirrors are copper backed and electro-plated. The diameter is .88.Specs amp; FeaturesInspection, Insulated vinyl grips, Application: Provide visibility in restricted areas, Quality: , Shape: Round, OAL: 7.5 (187.5mm), Body Width: 0.88 (22mm), Body Height: 0.88 (22mm), Tip Width: .88 (22mm), Tip Height: .88 (22mm)