Works with rcs wedges!Not a pro just lots of diy tile projects. Lev-tec is my favorite of this style but $, however they never snap when using the tool, i've snapped maybe 2 out of hundreds and hundreds, the bottoms are thin. I've gone through thousands of this brand. These break off very clean, (better than levtec) any bit that may get left is easy to grab and pull out.I never snap the good brand, these if using the tool i tend to snap a few here and there, specially if dealing with an out of level situation with large format tile or plank. Just have some of the pin types when you do so you can slot those in if you snap one. These work fine for hand tightening, just did a large format 12x24 tiles shower and didn't snap one by hand but since everything was true i didn't need much leveling.Bottoms are thicker, i've only found this to be an issue when stopping for the day and not setting my clips for the next (i'm not a pro just do a good bit of tiling projects)...with thin ones like lev-tec you can multiool a slot and put them in quite easily..these are thicker you gotta get a good bit of thinset out but a trick....use a tin snip, grind back just a bit, then snip a bit off and pop em under.I do prefer the lev-tec wedges but i used those and these too when doing a plank floor.I'd probably choose my favorite if doing a shower, and these for large area due to the cost but then again i keep ordering these.tricks for this stuff is this, trowel your area, strike off 1" in or so, back butter if you prefer , place spacers, place tile...now clean up your joint you shouldn't have any squeeze out where your clips are if you struck out your area (i use a small margin or pointing trowel, same i use to keep my mud bucket clean). Next just clean any with a toothbrush and wipe your towel. If you back butter your tile, strike off the edges there too (i just wipe a quick area while i'm cleaning the tile edges).BUT ...if you try to tile like you did before a level system you'll have a heck of a mess the next day around the clips from squeeze out (yes even if you did toothbrush,etc them it will be squeezed in the clips). But if you do....a 1/16 thin kerf masonry blade on an angle grinder + shop vac hose following and steady hand, then a nylon cup brush on a drill will clean you up without damaging the tile (but test first). But try not to do that as you'll be there all day if you didn't follow my directions above the first time.I’m a professional installer and have used many different generic clips. Only one was too narrow for my Ramondi wedges but these worked great. I haven’t had a single premature break and they break as they should when you hit/kick them.The wedges are not straight.When it comes to a good tiling job all things have to align, be straight, and leveled. These wedges are not straight.I have not used the wedges yet, just received them today.I immediately noticed that the side that goes against the tile is not straight. They look like they are made off flimsy plastic that bowed due to poor structural design.I went back to the website I purchased from and looked at the pictures they have on the website. The wedges look absolutely straight on all pictures. The ones I received are not straight.As I said, I have not yet used them and this may not affect installation, but I believe it will affect the final result. I will write an update as soon as I get to use them.UPDATE:After completing the job installing 6x12 staggered marble, the clips did the job.I'm upgrading from two stars to three stars. Unfortunately I cannot give it more than three stars do to the poor quality of the plastic and the fact that the wedges are not completely straight.I still have the same wages to use on my next project but in the future when buying again I will try a different brand.I started with a different brand(pictured left) Thinking there’d wouldn’t be much of a difference I grabbed this product as a refill. These are all of the spent clips while I was transitioning and the performance is so much better! This version saved me hours over the course of tiling my house and I am so so pleased.PerfectosYou are paying much less compared to the other brands. So there is a reason. They don't break off completely and leave behind small pieces that need to pull or broken off later. For the money not worried. If you have a large job I'd order the other Italy brand.