The Cementex Updated Double-Insulated Wrenches now feature a continuous outer layer of orange insulation to provide a smooth transition between the dual-layer and single-layer portions of each tool. The enhanced design enables the work end of the open-end, box-end, and geared wrenches to be slimmer. According to the company, the insulation is guaranteed to pass a 10,000 VAC proof test in accordance with applicable U.S. and international standards.