An Universal Female Crimp On A/C Fitting Kit and Fitting type: BEADLOCK  FITTING FEMALE FLARE - 45°  

it features a variety of the more popular A/C Fittings that will get the job done on most A/C 

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

beadlock fittings the hose should use steel thin fittings.

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

then choose the correct fittings.