Editorial Review Features: - IDEAL FOR WET AND DRY HAIRS. - THIS SIMPLE DESIGN OFFERS THE MOST COMFORT AND CONTROL. - ROCKWELL HARDNESS: 59-61 - LIFETIME WARRANTY Rockwell: Rockwell hardness testing is a general method for measuring the hardness of metallic materials. In this test, a load is applied to set a diamond cone or a hardened steel ball in the surface of the metal. The hardness is measures by depth of the penetration
Features 1) IDEAL FOR WET AND DRY HAIRS. 2) THIS SIMPLE DESIGN OFFERS THE MOST COMFORT AND CONTROL. 3) ROCKWELL HARDNESS: 59-61 4) LIFETIME WARRANTY