Models: NH 8670, 8770, 8870, 8970. Bueller-Versatile 2210, 2145, 2160 & 2180 Caterpillar 35, 45, & 55 tractors. Extra caution should be exercised while operating direct-mount scrapers with Challenger track tractor on down-ward slopes. The heavy duty 2-ear drawbar moves the vertical hitch pin very close into the tractor for better weight distribution. The 1.75" x 6.25" x 30" (pin-to-pin) drawbar uses the standard tractor drawbar hanger support. By repositioning the alignment pins in the hanger the drawbar is tightly secured. The tractors 1-3/8" belly pin is used to secure the drawbar in place. The drawbar includes the 1.5" x 12-5/8" (p.n. A123299-07) horizontal scraper hitch pin, castle nut & cotter pin.