The only locking extension cord in the market able to withstand a pull strength of 80 lbs. Pro Lock Extension Cord - There is no other option.
Century D14412050BL 50' 12/3 Blue Extension Cord
Pro Lock Extension Cords
Heavy Duty Locking Extension Cords – Pro Lock Cords
Century D14412050BL 50' 12/3 Blue Extension Cord
Primelok locking connector prevents unwanted disconnects Primelight power indicator light shines when the cord has power Heavy-duty plug and connector
Prime KCPL507830 12/3 SJTW Locking Cord, Red and Blue, 50-Feet
Coleman Cable 090288802 12/3 by 50 Foot Twist Lock Extension Cord
Pro Lock® - Century Wire & Cable
Heavy Duty Locking Extension Cords – Pro Lock Cords
100ft 12/3 SJTW Pro Lock™ - Fluorescent Orange – bluecollarpros
Buy Century Wire and Cable 12/3 AWG SJTW Pro Lock Extension Cord with CGM (Blue, 100') featuring 3-Prong Male to Female, 15A, 125V Rating, Locking
Century Wire and Cable 12/3 AWG SJTW Pro Lock Extension Cord with CGM (Blue, 100')
The Clean Garage 50' 12/3 SJTW Pro Lock Locking
50' Pro Lock Locking Lighted Extension Cord
Pro Lock Locking Extension Cord Connector, Blue