Round Rotating Knock Blocker - Electrical Panel Lockout

Black powder coated metallic insert prevent operation of switches, handles, levers, hole or allowing insertion of handles in the rack-in / rack-out holes. Should be riveted directly to the electrical panel doors. Can also be screwed or directly stuck (with double sided tapes) after cleaning the surface of panel. Use Padlock and Tag while performing Lockout / Tagout.