Specifications:
Max Operating Angle: 30 Degrees
Material Type: Steel
Finish: Black Oxide
End #07: 5/8" 36 Spline With Set Screw 0.620 Major Diameter
End #37: 11/16" 36 Spline With Set Screw

We call this our 17mm u-joint for our electric power steering kits however the true dimension of it is 11/16" or 17.5mm so if you're looking for precisely 17mm then this u-joint will be a little large on the splines.

17mm = 0.669 Inches
17.5mm = 0.689 Inches
11/16" = 0.688 Inches

If you're trying to replace one of Sweet Mfg's u-joints and haven't removed it from the car/truck/vehicle yet, you can turn the steering column to see the part number engraved on both sides of the universal joint.

Each end of the u-joint will have a part number engraved in it. Below is a complete list of Sweet Mfg's part numbers. For example if one end of the u-joint says 06 and the other end says 10 then that u-joint is 3/4 smooth weld on to 3/4 forty eight spline. We stock every common combination of Sweet Mfg's universal joints. If there are specific ends that you need on both sides of the universal joint, we can special order it from Sweet for you, but there's usually a 4 week wait and special order universal joints are not refundable.