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Grounded Duckhead for Apple Mac - No Tingling or Buzzing! - AC Wall Adapter Plug Duck Head 3-pin US Charger for MacBook/iPhone/iPod AC Power Adapter with Ground Prong - Won't Slip from Outlet
The only grounded Duck Head adapter for Apple power supplies on the market. Compatible with MacBook and iPad chargers with removable duck head. This is the only duck head on the market that fully grounds your computer. This means that the case of your MacBook will be fully connected to electrical ground when using. This has many benefits it eliminates the annoying buzzing feeling felt on the MacBook in some situations. It also creates a much firmer connection to the wall, preventing your adapter from slipping out. It's also safer, especially when working in sensitive areas like medical facilities or around sensitive

Price is $12.00

Price: $11.95