Heritage® Supreme 42-Tooth Thinning Shears aremade from the finest ice-tempered drop-forged stainlesssteel. American craftsmen hand finish and inspect eachpair of Heritage Shears against strict quality standards. Precision-ground for a long-lasting razor-sharp edge Rubber finger hole linings ensure a firm comfortable grip Made and inspected in the USASupreme 42-Tooth Thinning Shears measure 7" with a RockwellHardness rating of 58. Thinning shears are used to blend orthin coats. Material: 440C Ice-Tempered StainlessSteel Size: 7" 42-Tooth Thinning Shears Rockwell Hardness Rating: 58BlendingShears compared to thinning/finishing shears have a higher number of teeth per inch of shear. Thus thecumulative cutting surface is smaller and less hair is removedwith one motion. This allows them to be used to soften harshclipper lines by blending close to the skin and also for bulkthinning. Thinning/Finishing Shearshave a lower number of teeth per inch of shear. Thus thecumulative cutting surface is larger and more hair is removedwith one motion. This allows groomers to bulk thin larger areasat one time. These shears are also great for finishing a"natural coated breed" they create that natural lookeasily.