Well they did their job but it took me longer to lift them off the truck than it did to unhook them! Settled well in the mud, on a slope, in a 2x4 Suburban XL (with Posi/Z71, so that helped). They relatively fast, maybe too fast for a single wheeler that dropped the Trac Grabber in seconds despite being tightened as tight as I could get it. Luckily I saw it before it got screwed too much on the brakes/axle. Reinstalled and then climbed out of my mud pit Impressed at how relatively easy it was although careful gas manipulation was required to avoid digging a deeper hole, bought two packs of large off-road grabbers, perfect for this application (you only need ko grabs the wheels , to get power, although I think two more up front might help me given the incline). when it's time to remove them. As mentioned, the tension on the straps increases significantly as you use them; that's why the tires are swollen! This kit really should come with a large screwdriver to open the buckle and instructions on how to do it. I may have destroyed one of the straps when removing it (the screwdriver ripped it to hook it). It took about 30 minutes to remove them. So 4 stars because they gave me free but no 5th star because there is no cordless screwdriver or any type of screwdriver (I suppose they assume you have a good spare? And save it with the grippers?) and how long it took to remove them. I can't say I have the best idea how to keep them as functional as they are and easier to remove, but then again I don't design. Not sure if they're fit for more than one extra use as they were torn apart when pulled out of the mud and even just off the truck. Still way cheaper than towing (probably $500+ from where I was, 100+ yards off the road) even if I can only use it once. Most likely, they will be given away along with a screwdriver that will be added to the package.