Decking material is notoriously unruly, especially after it has weathered a bit. If you don’t get the boards down quickly, before they have a chance to warp, twist, and bow, let the Board Boss deck clamp help you take control. Just slip it onto an 18" long, 3/4" black iron pipe clamp, then slide the movable pipe clamp end back onto the pipe. When installing bowed decking material, just slip the hook behind the previously fastened board, then tighten as necessary to create the desired spacing. The Board Boss is made of 1/8" thick powder coated steel, and is 6" wide to distribute all that clamping force! Pipe clamps are user supplied. Made in USA.