The ABUS 2ALHB/40-75 is a 40mm aluminum, long-shackle, keyed-alike lockout padlock built for one worker managing multiple isolation points or deep, stacked hasps under OSHA 1910.147.
The Brady SafeKey ALU-BLU-38ST-KD is a blue aluminum keyed-different lockout padlock built for one-worker personal energy control under OSHA 29 CFR 1910.147. Honest buyer's review.