Asiatam metal sprockets and idler wheels for Heng Long KV1 1/16 scale

Asiatam metal sprockets and idler wheels for Heng Long KV1 1/16 scale.  Set includes two sprocket wheels, two idler wheels, two axles for the idler wheels, plus replacement drive shafts (not illustrated).  The idler wheels are fitted with bearings.  This upgrade is a necessity if you are fitting metal tracks to your KV1.