Mityvac MITMVA670 Power Steering Air Bleed Adapter Kit Adapters form an airtight seal in the neck of a vehicles power steering pump allowing for air evacuation All three adapters include an inline barbed connection for a 1 - 4" internal diameter hose These adapters will work with your Mityvac and most other brands hand vacuum pumps A 90-degree barbed connector MVA665 is available separately and can be interchanged with the inline connector on MVA661 and MVA662 for applications with limited overhead access