Master locks range of ready to go lock out kits are quick and practical solutions to give you the right range of lock out equipment to get the job done straightaway each kit has the right mix of products for specific uses the master lock 23 piece electrical lockout kit with s31 stainless steel shackle enables a wide range of applications and the padlocks included are versatile supplied with lightweight carrying cases with modular transparent compartments provide effective grouping of lock out