Replaces ATCO SB1804, 35S1804. ALL FITTINGS FIT BARRIER TYPE HOSE AND ARE BEADLOCK STYLE, REQUIRING AN A/C HOSE CRIMPING TOOL. Excellent QualityAir Conditioning, Straight,ALL STEEL ,Male INSERT O Ring Type, #12, Crimp On Hose Fittings For #12 STANDARD Barrier Hose.