These kind of record sash clamp is for heavy and large work pieces, when you need maximum clamping force, this is the best sash clamps for you.
Because of the quick and smooth pressure it applies, work is done fast and easy. Roll threads that helps to apply the pressure are guaranteed hard to wear.
Flat bottomed slides and head are unbreakable and can withstand clamping without support. A solid steel pin is located though the holes spaced in the steel bars of the slides making it secure and still.
