Fahrw.. 4"Offset Strut M.west AT-6/PrF-RB620 adapts easily to any 1/6 scale AT-6 model. Constructed from aircraft grade aluminium amid steel components, these air operated retracts feature positive up and down locks. Each retract has functional chrome-moly steel struts and are designed for use with 4 (101.6mm) diameter wheels. The struts are also adjustable for height and toe in.