Static Care Banana Jack Outlet Plug Adapter with ESD Anti Static Wrist Strap Set 12' Coil Cord - Universal Ground 3 Prong USA Adapter

Does what it's supposed to and has a nice long coiled cord. As noted in another review, if you're trying to check that it's actually grounded all the way through you'll need to measure in megaohms and regular continuity tests will probably show as negative. This is exactly as intended as ANSI/ESD S1.1 specifies 1.0 megohm +/-20% of resistance in case a large voltage shows up on the other end when it's strapped to your wrist. Also take care with the plastic prongs on the plug as they're not as sturdy as normal metal plugs.

Measured E field with and without this grounding wrist,device, E field reading gets a bit higher after wearing it.no use.

I bought this because I have a treadmill in my basement, which tends to be very dry in the winter. The static build up from walking on the treadmill would shock me anytime I touched any metal, so I bought this to wear while I'm walking. It works great, no more shocks! I just have it plugged in to a power strip near the treadmill.

Still get zapped by ESD even when wearing this, so it provides absolutely no protection to your sensitive electronics. Do not waste your money on this!

Make sure you're multimeter is on m ohms. If not, it will probably see the built in resistance as no connection.