1972 - World's First
Collins creates articulating Self-Loading Dolly
1974 - Second Generation
Collins sets standards for tire sizes, quick release, adjustable cross rails.
1977 - Third Generation
Safety Ratchets System
1986 - Fourth Generation
Tower Safety Systems Updated
1995 - Industry First
Collins introduces Aluminum Cross Rails
2000 - Industry First
Collins adds Greasable Hubs
2006 - Fifth Generation
Lightest Weight, Highest Load Capacity, First & Longest Aluminum Telescoping Axle, First 8" Aluminum Wheel & Greasable Aluminum Hubs
2016 - Sixth Generation
Internal Load Bearing Pivot Points, Dolly Body End Caps, Flush Shoulder bolts & nuts, Dual-colored Zinc Plating standard, Zinc-Plated Cast Rail Ends