Cap Plugs
CAP PLUGS 85049/138-18A Qty of 100 per Lot Yellow Electrical Connector Dust Cap
A nice touch with this design is the fiberglass reinforcement for extra durability.
*200 QTY* Fastenal Niagara SRC-687-24 / 337431FA Cap Plugs 0.687" x 1.5" *NIB*
You will find that WILTON tools are designed with the user in mind, not just looks.