Replaces / ATCO RB6106 / 35R6106. ALL FITTINGS FIT REDUCED BARRIER TYPE HOSE AND ARE BEADLOCK STYLE, REQUIRING AN A/C HOSE CRIMPING TOOL. Excellent QualityAir Conditioning, Straight Ho se Splice ,#8 REDUCED (13/32" I.D. /11/16 O.D.) To #10 REDUCED Barrier (1/2" I.D. / 49/64" O.D. ) Hose REDUCED Crimp On Step Up/ Down Fitting.