− Decrease quantity for Tubing Couplers, 90 degree Elbow, Silicone, 4.25 in. Inlet/4.00 in. Outlet Diameter, 3/4 in. Diameter By 1 in. Long Fitting On Inside of Elbow, Each Quantity + Increase quantity for Tubing Couplers, 90 degree Elbow, Silicone, 4.25 in. Inlet/4.00 in. Outlet Diameter, 3/4 in. Diameter By 1 in. Long Fitting On Inside of Elbow, Each Add to cart