This is a reliable tool that is worth using in production. Advantages are very strong clamping pressure, even clamping pressure, clamps from all sides simultaneously (>4 if you buy additional corners), plastic corner inserts for softer materials or to level out uneven corners, small to large clamping capacity, affordable replacement parts when needed and robust construction . The price is quite reasonable for a device of this quality and features. Some complain about the awkwardness of using the clamp. Well, it takes a bit of skill or practice to get it right. On the other hand, nothing is more difficult than sticking with a set of separate angle clamps or 90 degree screw terminal blocks. To make the Merle clamp easier to use, it essentially comes down to a trial run to get the correct strap length and corner placement. This will take anywhere from a few seconds to a minute depending on how accustomed you are to it. If you apply dry and then loosen enough to easily take the corners off, it's easy to reattach and tighten after the glue has been applied. Without stress. If you don't dry fit first, but try to glue and match everything at once, it will look like a hasty mess. and you will probably make a mess too. Make sure the band clamp screw (which requires a wrench) is *tight*. The screw mechanism exerts tremendous force and the strap will *slip off* if the screw is not tightened. great product 5 stars as a production tool. Possibly 4 for the casual user as they need to acquire a bit of skill.