Service kit - He/O2 analyzer contains: Rubber mats O-ring 4x1 NBR O-ring 6x2 NBR O-ring 10x2 NBR O-ring 11x2,5 NBR O-ring 12x2 NBR M3 x 8 Flat head Phillips M3 x 25 Flat head Phillips M3 x 20 Socket head Programming connector DVI Display OLED Display glass Display underlay foil O2 sensor cable