HARDELL 90 Degree Positioning Squares Right Angle Clamps 5.5" x 5.5"(14 x 14cm) Aluminum Alloy Woodworking Carpenter Corner Clamping Square Tool for Picture Frame Box Cabinets Drawers

Held all the items I needed at 90 degree angels so I could screw them in place and still stay plum. Also handy for gluing corners.

Strong and simple to use. Do an excellent job keep the pieces square. I liked them so much that I bought a second set.

Very handy Priced well and good quality

strong and sturdy

I know they sell this tool set with the intention of clamping to form a 90 degree corner while making cabinet doors or picture frames, etc. I am using them with my new CNC machine. Since they have been predrilled I have used bolts with locking knobs with T track to form strong corners for placing my wood onto the spoiler board. Perfect repeatable placement of wood means I can operate the machine on many consecutive pieces without having to do alignment for each piece. They are so strong I can apply clamp pressure for a great hold down. Maybe they should include some t track bolts that work with the included knobs and supplement their use for this purpose into their marketing information. Great set of tools that are packaged, manufactured, and delivered in perfect condition. I am very happy with theses.