Camper/RV Leveling Blocks,10 Packs Suitable for Dual Wheels, Interlocking and Anti-Slip Design with Carrying Bag, Heavy-Duty for Camper Travel Trailer, Yellow

Everybody with an RV has/needs blocks. These can go under wheels to level. They can go under tongue jacks, levelers or stabilizers to distribute the load and keep them from sinking into soft ground.On top of the ‘normal’ uses, you will be shocked at how many other uses you can find for a set of blocks. You will also be amazed at how much weight these things can take, as long as it is not something sharp/pointy. Tons lighter than carrying a bunch of 2 x 10s or similar wood. Plus, these will interlock, where wood blocks don’t, making these much safer.As for this set, They come in a fiber carrying bag (like reusable shopping bags). The handles are sewn on and can easily handle the weight. The zipper goes part way down both sides, so it can get a large opening. The zipper also works quite well and smoothly, even though it is a plastic zipper, not metal. What is puzzling is the bag is sized for 20 blocks, not the 10 that come in the pack. Hmm. Wonder why that is. But it is certainly sized for two stacks, not one.One of the pics in the listing says 12 blocks, but it is only 10. Each block is just over one inch of lift provided. With the 10 blocks, you can build a pyramid 4 blocks high and get 4.3” of lift. They are sized so the first block gives you 1.3 inches of lift (due to the lock part that sticks out farther on each block) and each subsequent block (when stacked) adds 1 inch. The width of the block is 8.5” square. So, the 10-block pyramid comes in at 34” long, with a top platform of 8.5”x8.5” at a height of 4.3”. Other options are available. If you stack all 10 together to put under a tongue jack, for instance, you will get 8.5”x8.5”x10.3” tall.They lock together well, but not quite as tight as Legos. If you pull on one, it comes off the stack without being able to pick up the rest of the stack.Two of the blocks have a label reminding you that the flatter side goes down. This may be counter intuitive, but it allows for a more ‘grippy’ surface and prevents the locking tabs from digging into the ground or breaking on gravel, rocks. Would have liked to see some form of non-slip in a rubber/tape form, but these seem to work OK.The price (as of this review) was the same or maybe a buck or two less than competitors’ blocks, making them good value.I have only used form my cargo trailer (about 4k pounds) so far. If I find I have issues with a full-weight RV, I’ll report back. But so far, they have been great.

These are effective and durable leveling blocks. I haven't used them a wide range of scenarios yet, but my initial test proved these to be easy and effective. Some reviewers claim they should be bigger, personally I like the smaller size making them a little easier to stash in my van. They come with a carry case too so once they get dirty, the bag helps keep the dirt contained. The bag is very roomy too, seems like there's enough room in the bag for another set of blocks.

I live and camp in my RV in a mountainous area. This means that out of level, really means out of level. So there is usually a need for more of these blocks to bring the lowest corner up to level. I do wish the blocks were a bit bigger, especially when I use them on the dualys. If I had leveling jacks then these would be perfect. That being said, these are highly durable plastic that lock together, look good and offer good traction. When packing up, these can be rinsed off, dried in the sun and stored in a roomy bag. I like that they are a high visibility yellow. Chocks and blocks from wood tend to get left behind. Not these. I feel these are more than reasonably priced and are a good value. Because of their size, riding up them needs to be precise, but other than that they are really functional.

Works great on my golfcart and riding mower, especially in lieu of a jack or some of the sketchy things I've cobbled together in the past.These seem like they would be small for an RV tire, so I can't attest to that, but work great and solid build quality for our needs.Also- I really like that the bag is big enough to hold 2x the blocks that are in included. I'm keeping some of the tools that I only use when I'm lifiting one of these vehicles up so it's nice to be able to keep it in one spot. I might end up getting a second set of these to get them a little higher, but don't want to push my luck.Bag isn't super great quality, but the size of it and frequency of use will probably be just fine.

Not "Heavy-Duty" as title/listing indicates. At the time of this review, the title states "Heavy-Duty" and has a picture of a semi truck in one of the pictures. Can't speak for semi truck usage, but these started to crack under the pressure of front fifth wheel leveling jacks when setting up. Quickly removed them and used the older ones I had.These would be fine for travel trailer stabilizer and tongue usage, but I wouldn't use them for anything heavier than that.