This is a Needle Valve and Holder Assembly for the following engines: .40LA, .46LA, .65LA and the .46 FXI used on the Hobbico Nexstar. INCLUDES: One Needle Holder COMMENTS: This assembly is the NEW style and this is attached to the Needle Stay and is in turn, attached to the Cover Plate (Stock# varies with engine size.) For complete Needle Assy, use OSMG6997 MAF10/23/99 ir/jl updt jxs 3/01/06