As a professional tennis racquet stringer this sprue cutter is perfect for my job. Racquet stringers need to cut a variety of string types, from hard polyester to soft nylon to natural gut. With sharp blades, you can easily cut threads of any type and thickness. I tried many different cutting tools before I found this one. Each had its own pros and cons, but I am very happy with this tool. It feels good in the hand, feels good in the hand and the small, sharp cutting head allows precise cuts in small, hard-to-reach places. These pliers are great for trimming the extra string after tying a tie next to the racquet frame. The flat tips of the cutting blades make it easier to work without scratching the surface of the racquet. It's a well-made tool that fits my needs down to the last detail, and I imagine it works very well in many other types. Work.