I got this when I bought my kapex and considered it a waste until on of my employees had a board violently kick back at him for poor holding procedures! Since then I have bought another one for both sides of the kapex. Whenever we have the opportunity to use the clamps we do. The hold the material tight to the base and the fence. We prefer using 2. Even if not for safety they make a great stabilizer for that perfect cut. And if your like me who does not have such a steady hand this too is a great tool. Its like having a third hand!