This is an indispensable tool to anyone starting to learn to work on watches or who does often. It give tremendous torque when you use a case wrench with a screw back case so you do NOT marr, gouge and scratch the watch/case. This happens due to slipping with the wrench because many cases are too tight. This is for wristwatches not large pocketwatches. The one screw adjustment makes it easy to use and the 4 polyethylene posts are adjustable for different size watches and NEVER mar a case. You can buy them more expensive but not much better. This item is WCVISE and the cost is 15.75 + 5.45 shipping in the US. The photo is taken from my work area and not some glamorous photo. If you have any questions please send an email. On EVERY page every photo will ENLARGE click on it! EMAIL TO: Info@Westcoastime.com