This fitting has a 1-1/4" barb on both sides of the fitting with a hose stop flange to keep the coupler centered in the splice connection. 1-1/4" to 1-1/4" O.D. Hose Barb Coupler. ICT Billet 1/4" Aluminum Weld Barb - Weldable Fitting Nipple. 250" Hose.