90 Degree Elbow/Joint by PREFERRED Railing SystemsSold by Denver Deck Supply90 Degree Elbow/JointSpecsMaterial Type: Aluminum CastingBase: 4” from corner to end of slip fittingSlip Fitting: 1 ½” LongDescription: Use with handrail with an inside diameter of 1 ¼” and outside diameter of 1 ½”.