CablesOnline 3-Prong to 2-Prong Polarized Grounding AC Power Plug Adapter (20-Pack) (PS-A11-20) 120VAC 15A 1875W 3-Wire Grounded Outlets Convert a 3-Prong Power Plug into a 2-Prong while maintaining the ground. UL Listed (E218319) Current Tap 60OJ 20 pieces included in package