Review on Pack of 25 Waterproof Voltage Devices, Proudly Made in the USA! by James Eledge

No complaints. Pretty easy to use. A little difficult to close the cap after inserting the wires and cap into the silicone gel, but it always worked. The snap-on versions available on the market are a bit easier to use as you don't have to twist the wires around and then close them, you just snap them open, but you pay a little more for that convenience.