Here is the wing skid that protects your wing tip. This is not all. 
It was design to be removable. Some don't like to show their plane with wing skid on static display. You can remove skids and put in your tool box. 

Airpower RA-250 Trunion Adapter for 3/16'' Wire Struts

CANOPY SPARE PART
Spare Part for HET-RC F-104 Starfighter EDF jet.

Replacement inserts for Model Aviation Products Wing Tip Skid.

NOSE CONE SPARE PART
Spare Part for HET-RC F4 Phantom EDF jet.

CANOPY SPARE PART
Spare Part for HET-RC F20 Tigershark EDF jet.

Pair of ready assembled fiberglass Drop Tanks in silver color for the HET-RC F-86 Sabre and Mig-15.

Pair of ready assembled fiberglass Drop Tanks in gray color for the HET-RC F-86 Sabre and Mig-15.

EXHAUST COVER SPARE PART
Spare Part for HET-RC FA-18 EDF jet.

FIN SPARE PART
Spare Part for HET-RC F16 Falcon (Thunderbirds) EDF jet.