5/16" stud, 16-14 Gauge Nylon Insulated Rings. Non-skid ridge - tool slides to end for proper crimp. Beveled leading edge for easy wire entry. Funnel Barrel Construction for positive and easy wire insertion. Crimp ridge for centering and locating tool on terminal barrel. Injection molded, 105 degree C rated insulation of electrical grade vinyl plastic for uniform wall thickness and interface. Multiple serrations for maximum holding power and current flow. Barrel-to-pad transition designed to maximize strength and minimize bending. One piece, burr-free construction for maximum electrical conductivity. Electro-tin plating for maximum corrosion resistance. Rated for 600VAC max. UL and CSA listed. Bag of 5.