i wold not recommend getting a jumper cable this good unless you have frequent problems with your car.

i play a lot with different stereo components (amplifiers etc) in my car and i end up running the battery down dead quite often.

for me hauling around a 15-pound set of booster cables in the trunk is worth it because, for example, i used it twice within just the first week after receiving it – for most other people it may not be worth it.

the jaws grip super tight. actually its very hard to work them with just one hand because they are so strong – sometimes i end up using both hands to compress the spring – seriously i imagine many guys will HAVE to use both hands but this makes for a stronger contact. there are copper inserts in both jaws (so in 4 jaws in total) and some people prefer that although (of course) only 2 of the 4 jaws actually are connected to the cable directly.

the cable itself really looks like 2nd gauge – its almost all copper with only very thin (about 1 millimeter) insulation on top of it. this is unlike 10 dollar jumper cables which have almost the same thickness on the outside but are almost all rubber with a thin copper wire in the middle.

i ran into a bit of a problem with the insulation on the jaws themselves though. the red and black rubbery plastic on the handles is thin and not durable. when i gripped one of the jaws onto the handle of another it bit right through this plastic and started to spark. this is also a testament to how strongly the jaws grip – they bite right through insulation (so dont do that).

i never thought i would need so much length but actually its quite handy. we even managed to jump the car in-line parked with a third car in between our cars (but one of our cars had to be parked reversed for that).

for those of you who are not electrical engineers like me your engine needs a certain cranking current and to get it out of jumper cable the cable must have low enough resistance. resistance increases with cable length so if you have a big engine to start (bigger engines need more cranking current) and a long booster cable – it better be thick, because thickness of copper is what lowers resistance.

for my engine which is only 3.5 liters this cable is overkill but the only thing wrong with overkill is that you have to haul around a 15 pound booster cable in your trunk … perhaps in extra cold weather when the engine is extra difficult to start the overkill might come in handy.

five stars – this cable is no joke
Rating: 5 / 5

These are premium quality. They are superior to various jumpers I’ve owned over the years. The jacket is commercial grade rubber insulation. Conscientious owners will wipe them down after use – but reap the benefit of longer life, tougher resistance to abrasion, and fewer splits from age and use (such as with inferior poly jacket material). The parrot style clamps have strong springs and good ergonomics. I gave several of these as gifts to family members – and they most appreciated the length. At 25-feet (greater than a car length) one does not need to “jockey” the second car or dangerously double park to get the job done! The large guage wire has little resistance, so charging/starting is quick and doesn’t create a voltage drop, avoiding potential further damage…
Rating: 5 / 5

Product arrived before scheduled delivery time. Good quality cables and excellent price. I purchased these cables because of the quality and their lenght. I have a Kenworth semi and the lenght is excellent if needing to jump start other vehicles.
Rating: 5 / 5