To me, ideally this should have had a dummy battery terminal to clamp the cable to. Instead it has a metal "shaft" with a hole in it. So you need to either create and attach a dummy battery terminal, or find a long bolt and nut to go through the "shaft" and through the clamp on the cable. Very difficult and awkward at best.

In addition, it's certainly not a quick disconnect; you must unscrew and completely remove the knob - and pull out the "shaft" portion without losing a teflon square washer (which serves only to make a poorer connection with smaller surface area). Then you can either put the knob back in, or put it away and risk losing it.

To me, this is a terrible design. I modified mine by slotting the hole in the clamp portion, so I can just loosen the knob and pull it loose.

I don't know just how I discovered these things, but find them amazingly useful. I know they were intended for securing tarps, but I found them to be far better at keeping extension cords and air hoses coiled up. Easy to fasten, easy to undo, very reusable. The HF ones are good quality, but I found equally good ones in various lengths for way less money on Amazon. Even Home Depot prices are lower than Harbor Freights. Strange, that doesn't happen often. Price is the reason for a 4, not a 5.

These jacks are amazingly versatile. I've moved sheds with them, putting timbers under the shed, then jacking it up and then tipping the jack over them over to slide the shed. Handled this abuse with no problem. Nice to have in pairs. Used them to get a very stuck 4X4 truck unstuck. Pulling fence posts and sign posts out of the ground, even when set in concrete. Helps to keep the ratchet/reverse mechanism lubed. My only complaint is the handle wants to fall down when they are stored or sitting under a load. Using what Harbor Freight calls a "Ball Stretch Cord" item 47302 secures the handle to the vertical.

I've had this for about 4 years, and it hasn't failed me yet. I went out today to grab a grease gun for some trailer wheels and this is the one I picked. My luck with grease guns is pretty sorry. On the wall where this one is hanging are 3 other manual type grease guns. I know two of them just don't work, so work so intermittently that they are worthless. I need to get rid of a couple, but this is definitely a keeper.

Pretty decent folding knife.

The good:
* Heavy feel, solid
* Sharp blades included with the set
* Positive click action when locking
* Unlocking is easy

Docked one star for the following drawbacks:

* The blade guard is loose and will fall off and ultimately frustrate anyone who uses the knife with much regularity
* The blade-changing procedure is unnecessarily risky in terms of slicing fingers, compared to most other blade holders of this sort that I have

Overall a great purchase when on sale.