A 90 Degree Elbow is a specialized pipe fitting used in hydraulic and pneumatic applications. It allows for a change in direction while the O-ring face seal end provides a leak-tight, O-ring sealed connection, and the national pipe taper fuel threads offer a secure and tapered thread connection.Attributes:• Ensures secure fitting for 15.88mm outer diameter tube.• Provides a secure threaded connection.• Prevents fluid seepage under pressure.Applications: A 90 Degree Elbow enables a change in the direction of hoses while maintaining a secure connection.