This simple frame clamp is fast and easy to use with the unique speed nut design. With a clamping capacity of up to 48” x 48” it is ready for projects big and small. The alloy corner blocks have a relief cut to ensure that your miters receive consistent clamping force without damaging the corner tips or trapping glue squeeze out. With a slight twist of the brass speed nut fasteners, each nut slides along the included threaded rods then locks in place to apply clamping force only where you need it. This intelligent design allows you to quickly adjust the clamp to fit your work piece in a matter of seconds.