Heavy-Duty Cabinet Tip Screwdriver. 3/16" round shank x 6" flat blade screwdriver. Narrow cabinet tip for limited access applications. Handle marked for easy identification of screwdriver size, type and length. Precision-machined tips for accurate fastener contact. Strong, durable black phosphate tips prevent chipping of plating. Soft, cushioned grip for extra comfort and torque. Exceeds ASME/ANSI specifications. Lifetime limited warranty. Note: This is not an insulated tool.