Isri Seats are a specialist seat manufacturer supplying OME and aftermarket seat options for Trucks, Buses, Coaches and Earth-moving equipment. They come standard in Volvos and Isuzu trucks and are supplied as driver's seats in other various original equipment. The 6830 and 6860 identifies the suspension base. This cover also has a special fitting instruction please see fitting instructions above. Apologize as no armrest cover is available.