Bison NB80-180 6ft 80hp Grader blade Price: $2,895.00 Inc GST Out Of Stock! We will notify you when this product becomes available. Availability Date: NB80-180 Rear Blade Manual adjustment, optional hydrualic adjustment , leveling wheel or end plates can be fitted. Suitable for tractors up to 80 HP CAT 2 3 point linkage 3 way adjustment , angle offset and tilt. Assembly Required.