Masterlocks range of electrical Lock out hasps are practical, flexible and hard wearing and used when multiple numbers of workers are operating in the area. They can be used in a variety of locations for a broad range of lockout tasks. The Masterlock Zenex body Two Padlock Lockout Hasp has a 4mm Shackle and enables lock-out by up to 2 padlocks to keep the equipment inoperative while repairs or adjustments are made. The Zenex composite withstands extreme temperatures and chemicals and is UV-stable. Ideal for electrical circuit breakers. Maximum shackle diameter: 6mm. Master Lock Two Padlock Lockout Hasp - 4Mm Shackle in Red