Replaces: ATCO BL1310 / 35B1310. ALL FITTINGS FIT STANDARD BARRIER TYPE HOSE AND ARE BEADLOCK STYLE, REQUIRING AN A/C HOSE CRIMPING TOOL. Excellent QualityAir Conditioning,Straight, Step up / DownFemale O Ring Type, #12 Nut (1 1/16"-14) ,Crimp On Hose Fittings For #10 (1" O.D.) STANDARD Barrier Hose.