Four models of pull-type scrapers are available in 17- and 22-cu.-yd. capacities, and in standard two-wheel (E-17 and E-22) or an advanced four-wheel design (E-17XW and E-22XW).

The H Series wheel tractor-scrapers include the 621H single ... The 621 is also available in a push-pull configuration for the first time. The Cat C13 engine in the tractor produces 407 hp ...