Sumnacon 5Pcs 4mm Banana to Banana Plug Test Leads for Multimeter,6.6Ft/2M

Very satisfied with these cables. What I liked most is that the banana plugs fit firmly into the female jacks of my multimeters and bench power supply, which is not always the case with inexpensive test leads. I have used similar cables from other sellers where quality varies significantly and some banana plugs fit loosely or make inconsistent contact. In this case, every connector fit firmly and consistently. The mechanical feel is good and the connection feels solid. I also measured the resistance using a dedicated low-resistance (4-wire/Kelvin) meter and consistently obtained values between approximately 38 and 41 mΩ for the pair of cables connected end-to-end, which I consider a very good result for 1-meter stackable banana cables. This helps reduce measurement errors and minimizes voltage drop, power loss, and heating compared to higher resistance leads. Regarding the 15 A specification: personally, I think it should be taken with some caution. With approximately 38–41 mΩ measured, at 15 A the voltage drop would be around 0.57–0.62 V and power dissipation would be roughly 8.5–9 W distributed across the cables and connectors, so I would not consider them ideal for prolonged continuous operation at 15 A. For moderate currents and laboratory use, however, I think they perform very well. Overall: good connectors, low resistance, firm fit, and highly recommended for laboratory work, testing, and general measurements.

These are fairly good test leads, and are not magnetic so they are probably actually copper inside. Insulation is soft and bendable and they do their job great. I have been slowly buying several of these with different ends for the various test gear on my work bench and have been pleased with them so far.

Cable has the feel of a high quality test lead. Plug tolerance is iffy; some are looser/tighter than others. However, it does not seem to have any effect on conductivity. Did not receive any bad leads but I have before on similar products. I just replaced the bad ones and never had a problem with the rest. *small rant* people leaving 1 star reviews because they associate a few bad cables as something that equates to unreliability are ridiculous. I would think people buying this product are at least somewhat scientific minded. There is very little correlation between poor QC and product reliability. Even big name $100k test equipment comes in bad on occasion; sometimes even with a high rate of failures. Just because somebody catches it early before it makes it to the customer does't make their product more reliable. It only means you never find out about it. The key here is whether the construction of these cables are good or bad. So far nobody dropping 1 star reviews has bother to cut open their supposedly untrustworthy cables to see if it has proper quality construction. Additionally there is a myriad of tests that can be performed; likely the same ones a manufacturer would use to certify their product. That's the only real way to tell if its just a defect or poorly made. In case you're wondering I stress test my cables with high voltage (240v) at 10A for 30min; perform a frequency sweep; and a resistance test. This tells me all I need to know for my own use case.

I'm good with these, solid, and seem sturdy enough. I use them every day more or less.

Build quality was comparable to Pomona . Insulation was soft and flexible . Conductor diameter indicates 16 Gauge copper wire . At 3.0 Amps the Voltage drop was only 53.0 mVDC from end to end . Very impressive . Highly recommend.

Very nice set. I ended up cutting two of them for a project box I made to test a starter motor issue I was having with one of my cars. I needed a couple of 18 AWG leads with a banana plug on one end for a multimeter and bare wires on the other to the project box. It was cheaper to use these and cut one end rather than buying the banana plugs and make the cables myself. The wires are definitely 18 AWG. The two I used for the project box stripped perfectly using the 18 AWG slot in my wire strippers. The insulation is nice and thick. I did a comparison test using a heat gun soldering iron set at 500 degrees pointing to an 18AWG wire insulated with PVC versus one of these that appear to be insulated with silicon. The PVC coated wire turned black and hard; the wire from this set did not discolor at all and remained flexible. So it appears these are indeed silicon. My multimeter shows about 100 milliohms for each wire, end to end. Very consistent for each one in the set All in all, a very good buy.

All Good! Now we'll see if they hold up!

These are the best! If you do much with electronics or electrical, you know how much time can be wasted with unreliable test leads. These silicon test leads are very flexible, yet provide solid and reliable connections - while being reasonably priced. They are rated at 1000 V, which I assume is AC. I've used them in short-term, low-current tests at 2000 VDC with no problems. I haven't used them past their 15 Amp rating, and don't recommend doing so. The 5 colors are very useful, although I'd like to have a 6th color, especially white.

If you do a lot of electrical testing and work, then these are great. Plan on buying more when I get time to build my multi-voltage test box

Not crap, good for home lab. No failures so far, nice and limp cables.

the real deal. Better than buying uninsulated banana plugs and dealing with the work of prepping them. Can cut these in half and solder if needed to extend for speakers, testing equipment, and more. Fits into my multimeter probe socket on BK Precision

good quality wire, andends work as advertised.

They are almost 1 meter long each. Feels very soft, but strong enough. I've not checked the resistance of wires but I'll update this review soon.