5” Dia, 6” Drop Center Leading Kingpin N-Series Spindle Axle With SAE Standard Position Abs Sensor Mounting Brackets (1) | 16.5X7 Es Brakes (1) | 5.5” Automatic Slack Adjusters (1) | Type 30 Longstroke Service Brake Chambers (1) | Preset Bearing Cast Iron ABS Hubs (1) | Oil Seals (1) | Cast Iron Brake Drums With Shipping Nuts (1) | Spindle Nuts (4) | Oil Type Hub Caps With Window & Center Plug (1)