I'm a carpenter and use a lot of staples, glue and nailers. I found this set of clamps to be invaluable. The marks left by the clamp springs correspond to the end nail. When used on site at the installation site, you can turn the spring clip by one degree to the side. The spring clips are strong enough to hold your parts together but allow for movement so you can align your parts. Indispensable for moldings and panels.