Outward/Inward Rotation Allows for Easier Application and Storage. Surrounds the electrical plug; protects against accidental reconnection. Each size rotates into itself for compact storage in safety took boxes. Complete with high-visibility permanent safety labels (English, French, & Spanish) No. 488 Labels can be written-on to identify the responsible person then erased for the next job. Tough, lightweight, dielectric Xenoy® thermoplastic bodies withstand chemicals; perform effectively in extreme conditions [temperature range -50úF (-46úC) to +350úF (117úC)].