1.WENZHOU LUMEI(L&M) is an excellent automotive air conditioning parts hose fitting supplier from China. 

Our company's products focus on hydraulic fittings manufacturers.The scope of application covers: passenger cars, 

refrigerated vehicles, buses, agricultural machinery and engineering vehicles, etc. 

2.This is for an Universal Female Crimp On hydraulic fittings Kit and Fitting type: Female-O-Ring connector on 

0 degree.it features a variety of the more popular air line connectors that will getthe job done on most A/C 

Projects.SB :means steel material.the air hose fittings should use the thick hose.SR: means reduced

beadlock hydraulic elbow connector, the hose should use steel thin connection fitting.

3.When install those beadlock ac fittings, firstly must check if the hose wall belongs to thin or thick.

then choose the correct pneumatic connector fitting.