TRADESAFE Lockout Tagout Locks Set - 10 Yellow Keyed Alike Padlocks, 2 Keys Per Lock, OSHA Compliant Loto Locks for Lock Out Tag Out Stations, Premium Grade - Amazon.com
Red Lockout Padlock, $6.49ea.- package of 6 - PanelLockout.com
Lockout Tagout Locks, 1-1/2 Inch Shackle Key Alike Safety Padlock Plastic Lock Light Green 2 pcs - Walmart.com