Davis Extreme Edge™ Shears - 7’’ Thinning with 48 Teeth Davis Extreme Edge Shears are handmade of the highest quality 420 Japanese forged stainless steel. The blades are hollow ground and honed to razor sharpness, with a Rockwell Hardness rating of 55, and will stay sharp through months of use. Dial adjusters allow easy customization of the tension and will not loosen during use. Davis Extreme Edge Shears are well-balanced with an ergonomic design for greater comfort and better control. Includes a leather case.