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These are horrible for longitudinal cuts. Had one a company in the past bought for me. Threw it out yesterday. There's much better tools out there, especially for this kind of money

I purchased this after purchasing and using the Arolax Round Cable Stripper (of similar size). I was unable to get the Arolax to work on my 18 AWG 3 conductor which is more flexible. The Jonard CST-1900 worked well for this cable (see photos for comparison). The first time, it cut in a perfect circle. Subsequent cuts have started to spiral slightly (which is the problem I had with the Arolax). In order to combat this, I simply grip the cable with my thumb and index finger right at the point where the tool is holding it (see photos). This prevents the tool from moving much on the cable and seems to help prevent the spiral cut when you're not in spiral mode.Things I like:-Strips smaller, flexible cables well (18 AWG 3 conductor - See photos - may need to use fingers to help hold it in place)-Strips 14 AWG 3 conductor power cord well-Tool is easy to manipulate between modes (circular and longitudinal strip)-Tool feels solid in your hand-Says Made in England on the toolThings I don't like:-This tool is more expensive than other options-Does not come with built in blade storage (or an extra blade) like the Arolax did-Does not have an edge to help strip/peel back cut insulation on the end of the tool like the Arolax did-Doesn't have a gauge to indicate depth of cut as another reviewer stated (none of the ones I looked at had this feature - this would be virtually impossible to implement due to how the tool adjusts the blade depth)Overall, I am very happy with this tool and I would rate it 5 stars if it had some of the Arolax features and/or it didn't have a slight tendency to spiral on the smaller, flexible cable.Edit to add photos.

Using on 1/0 wire. This tool did exactly what it was supposed to do for exactly 4 times. Then the tip broke and it was completely useless. It needs to come with several extra tips.

This tool does a far better job than any other tool I've tried for stripping the insulated sheath of electrical cables. It has a small knife that protrudes an adjustable distance into the opening created by a clamp that forces the cable against the knife, which is adjusted to just barely penetrate the outer sheath without damaging the insulation on the wires within te cable. This adjustment can be frustrating, since the outr insulation varies in compressibility and thickness. Thus, several attempts may bre needed to find the correct adjustment. Once found, the use is simple and effective. Bu adjusting the angle of the blade, circumferential, longitudinal and spiral cuts may be easily made.If you are using it repeatedly on the same type of cable, it is a great tool. If each use is in a different type of cable, be aware that several attempts at adjustment may be needed before each cut. There are no markings to help you repeat an adjustment that worked last week. Each time a different cable is used is essentially the first time. If there were some way around this, it would easily be a 5-star tool.That said, it beats everything else I've tried, so I do recommend the tool.

Was able to cut insulation of truck battery cables with ease.

A most valuable tool to have in your bag. Cuts virtually all the cable jackets that I've come across. I would rate this tool a bit higher in sturdiness but I've only been using it a couple of weeks. And I don't really like twisting the body to turn the blade but we'll have to see how long it lasts. I would also feel better if the body was metal instead of just plastic. But then I guess it might weigh heavier if it were metal. All in all, it seems worth the price paid.

Odd that it is spring loaded to the rip position. When use to strip you must hold the tool (against stiff spring pressure) at 90 degrees to the unloaded position. Very awkward to spin around the conductor while holding the blade perpendicular to the wire, especially for smaller (awg4 and up) flexible wire. Would have far preferred it to be sprung the other way. I'll likely keep using my knife unless ripping wire for recycling. Disappointing.UPDATE: Jonard customer service was very helpful. Found that the blade was not properly set in the detent. Simple fix. Tool is useful, but better for stiff wire than flexible, rubber-coated wire which is what I bought it for.

No more hitting wires with this one

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Works great for circumference cutting.Definitely difficult to use on linear cutting but not impossible.