These shears are ideal to cut materials made from aramid and para-aramid fibers such as Kevlar®, Dyneema®, Vectran®, Spectra®, Technora®, Nomex®, Innegra®, Dacron and other materials made from fiberglass and carbon fiber in rope, ribbon, thread, tape and fabric form. Its blades are made of high carbon alloy steel from Japan and are infused with Molybdenum and Vanadium (HRC 60~62) through a proprietary manufacturing process to achieve a level of hardness (HV1200) to cut high tech material. It can be used to cut materials made from carbon fiber, glass fiber, plastic, canvas, vinyl, leather, suede, leatherette, nylon, silk, cotton, for upholstery, headliner, cloth, string or other knitted forms. To cut composite-grade materials is a very difficult task. These 6-1/4" shears are meant for precise and clean cuts into the material. They can be used to make relief cuts during the lay-up process so reinforcements precisely fit in the mold. Or cut stubborn threads hanging off the edge of fabric. Or make small cuts for intricate parts. The cutting performance is great across the length of the blade; in fact, the blades cut all the way to the tips for quick and accurate trimming. They can also be used to make relief cuts during the lay-up process to fit the reinforcement into the mold. Also used for splicing all type of halyards, sheets, topping lifts, lazyjacks and control lines. Cut hanging fibers along the cutting edge of the fabric cleanly. Cut fiber thread off the fiber optic cable neatly when installing connectors. Those shears have some darned impressive FACTS backing up their product. Construction of Chrome, molybdenum and vanadium ring the right chimes. So does the emphasis on high carbon steel. And correct heat-treating. Nylon and fiberglass handles for weight savings. Even the degree of hardness (similar to a buck knife). I chuckled at one three star comment that claims this metal cannot be re-sharpened. Oh yeah? Try a diamond infused sharpener surface, dummy.
https://smile.amazon.com/5-1-inch-Carbon-Steel-Shears/dp/B0184KGOR0/ref=sr_1_2?s=hi&ie=UTF8&qid=1536854350&sr=1-2&keywords=clauss+Kevlar+Shears#customerReviewsTHANKS SPRIDLE!!!