Master Lock’s easy-to-apply Snap-On Lockout Hasp (No. 427) fits a wider range of lockout points and features a spring-loaded locking arm that gives it "snap-on" simplicity. These corrosion-resistant hasps, part of the company’s new line of Safety Series™ products, remain secured to the lockout points until the last padlock has been removed.Master Lock Co., Milwaukee, WI.