Mechanical suspension, stroke 100mm, Height adjustment, Fore/Aft isolator, Fore/Aft adjustment 210mm, Lumbar support mechanical. Backrest tilt max 35°. manual weight adjustment, Complete with armrests. Seat cushion width 480mm. Fabric covered Tractor seat, Fork left seat, construction machinery seat. Arm Rest-Right: STGMAXARR. Arm Rest-Left: STGMAXARL. Head Rest: STGMAXMHR. Suspension Base Only: STGMAXMSB. GRAMMER part number 1288549