The most popular coupler mechanism ever developed, the Fas-Lok originated as a Fulton brand and is offered in a full line of SAE Class I through IV rated straight tongue stamped couplers. The Fas-Lok latching mechanism allows quick and easy trailer hook-up, and is factory adjusted for convenience. Finish: Zinc Weight: 3.95 lb Ball diameter:...

The most popular coupler mechanism ever developed, the Fas-Lok originated as a Fulton brand and is offered in a full line of SAE Class I through IV rated straight tongue stamped couplers. The Fas-Lok latching mechanism allows quick and easy trailer hook-up, and is factory adjusted for convenience.