Trimax UMAX100 Premium Universal Unattended Coupler Lock

Universal Narrow Body 9/16 Steel Shackle Dual Coupler Lock With An Integrated U-Lock Feature
Huge 7-Tooth, 3/8 W Locking Lug System
Fits Most Couplers (1-7/8, 2, To 2-5/16)
Rugged Corrosion Resistant Finish
(2) Keys Included