How a footswitch is, of course, no rocket science. But this one is crafted really well. Other footswitches ranging in this pricing category seem to be kind of unfirm. Some really hang a bit loose when built in. I used this one to replace a broken one in my MXR Auto Q. Works perfectly. The only thing you need to know is, how to solder. The original footswitch stopped switching after 4 months of useage. The new one works since then, which almost a year! What can I say, I am more pleased with this one than with the original switch. There is one thing I have to criticise. The lenght of the winding cylinder just sufficed barley. Maybe it would be recommendable to offer a variation of cylinder lenghts?