Create BEAUTIFUL works of stained glass and mosaics with this professional glass tools! These are the finest stained glass tools offered on Amazon. All Tillery Innovation tools are high quality, carbon steel, and are crafted to last a lifetime, with proper care and use. These are the same tools we have been using in our professional stained glass studio for the last 34 years. Our 3/8" Breaking and Grozing pliers are used to break and "nibble" the glass to the desired shape. The Tillery Teal cushioned handles make glasswork a pleasure and reduce hand fatigue. If you have not used proper grozing pliers before, please get yourself a pair - you will wonder why you waited so long. A perfect gift for the beginner or the serious stained glass artisan.