This capper does the job, but not very satisfying to use. I have been using a two handled capper (butterfly style) for the last 25 batches (about 1200 bottles) and wanted to switch to this style capper because I would typically crush the cap seat of the bottle at least once per batch. I was also finding that when I later opened the bottle, the entire neck would break off, just below the cap. I assume that is due to the stress that the capper subjects the bottle to. I just bottled my latest batch and had no broken bottles or misplaced caps. The height adjustment works well allowing quick and easy height adjustment to accommodate different size bottles. I mounted the capper on a piece of 3/4 plywood, which made it quite stable. However, the reason it is not very satisfying to use is that it takes a lot of force to properly seat the cap. Enough so that I’m concerned that I might break the bottle— although none did. Beyond that, about every fifth cap gets stuck in the capper after it is crimped, requiring some wiggling of the bottle to remove the cap. Finally, the spring loaded plunger must be binding because when the capping pressure is released, then plunger snaps back making a startling and surprisingly loud noise. I tried to remedy that with some silicone spray, which seemed to help some, but did not eliminate the issue. I also wonder how long this capper will hold up. While the stand and lever arm are steel, the capper body is made of plastic. The capping operation applies a lot of stress to the body, but time will tell. While bottling this first batch, some black fragments came out of the crimping cup. It looks like those came out of the Center of the plunger inside the cup. Not clear if tat part was functional, though, as it did not appear to impact the operation.