The TL-20 is easy to install on your unattended trailer. Just place the slanted side toward the front of the coupler and insert the 3/4" steel pin. Secures with 3/8" diameter padlock (not included). Fits all 1-7/8", 2" and 2-5/16" Bulldog collar-lok couplers with ease!
3.25 inch Wide × 2.63 inch Tall - Inside Dimensions
Overall Dimensions 3 inch long × 7 inch wide × 8 inch tall
Made from Heavy Duty Aircraft Aluminum, Will not rust