Product description:Precision machining double universal joint coupling (flange yoke)1.StructureDouble2.MaterialSteel,Website:http://www.chuanglianhz.com, stainless steel, alloy steel…3. TechnicsCNC Machining, wire-electrode cutting4. Rotation Speed4000 R/MIN5.Operating Angle45 degree6. Head CodeSmooth, splines, hexagon, key way or some special designs.7. Surface TreatmentNatural or coated8.Tolerance+/- 0.02mm9. ApplicationSteering system, transmission system, shaft coupling10. ConnectionWelding or screwInstruction:The double u-joint uses two U-joints joined by an intermediate shaft, with the second U-joint phased in relation to the first U-joint to cancel the changing angular velocity.The universal joint is made by steel or stainless steel, can be used in vehicle steering parts or mechanical transport system.We can make the double u-joint as your design.