Robart 108 - Gear strut covers, P51 60 sizeScale Main Gear Offset Strut Covers . 60 size (4" wheel max.) (pair). These detailed plastic strut covers fit over standard music wire struts to give a more realistic appearance. They feature snap together construction for easy assembly. Cut to size. For 1 8", 5 32" & 3 16" wire struts. These are also adaptable to retractable landing gear.