With the combination of a cobalt base alloy (CBA-1), a convex blade, and a dry bearing screw system for tensioning, the 5.75" Joewell Supreme SCC shears have superior durability that is more than 2.5 times longer than regular hair scissors. The handle is coated with hard titanium preventing any concerns of metal allergies. The semi-offset/ergonomic symmetric handle design provides the perfect balance for cutting shears without giving up any comfort. The dry bearing screw system prevents fatique thanks to the light, smooth opening/closing system. Unlike the metal ball bearing, it is not necessary to lubricate the dry bearing making these shears maintenance free. A special tool is included to make minute adjustments of the screw.