A-Line Mirrors for American Style Semi Tractors are great for detailing HO Scale semi tractors. This set includes four etched-metal rear-view mirrors, two each left and right. Mirrors are easy to install and require no gluing. Very durable, they can be used on Herpa, Promotex and most other semi-tractors. A-Line mirrors are available in both curved and straight styles as part of the selection of A-Line HO freight car, locomotive and vehicle details.