Tracking Fire Prevention Outlet Plug Cover (for 3P Outlets) TAP-PSC3N Please refrain from purchasing if you are concerned, as it has been stored at home. 2 pieces x 9 sets = 18 pieces total. This allows you to convert a regular power plug into a tracking fire prevention power plug. *This does not completely guarantee against tracking accidents. ■ It guards against dust and moisture by covering both the base of the power plug body and the insertion blades. ■ Uses high-elasticity silicone rubber (flame-retardant grade UL94V-0), providing excellent safety. ■ For 3P (3-prong grounded) power plugs. * If using a non-standard plug, be sure to convert it to a general-purpose plug before use. Forcing it in may result in poor insertion and can be dangerous.