The Circular Canvas Stretcher is made of one continuous profile. There are no joints or seams, no breaks in the stretchers continuity. It is 1 inch thick at the lip, and 2 1/2  inches wide. It is incredibly strong and will not warp or twist. Staples hold tight and snug and are easily shot in with the staple gun from the back. They are an exquisitely made art material for artist to stretch canvas on.