2004 Caterpillar 163H VHP Plus Road Grader, CAT0163HCARL00308, Rear Mount Scarifier, 5 Scarifier Shanks, 16 1/2" Long, 8 Speeds Forward & 6 Reverse, Blade Is 16' Long, Hydraulic Slide And Tilt. EROPS. See PDF Attachment For Component Tracking And Service.