Google Customer Reviews 
Description
This holder allows you to use the two light mounting points on the rear of your rack as a securing point for a mudguard.
The Holder has 50mm bolt spacing just as your rear light mounting plate on your rack has. Use the low point of this Holder to secure your rear fender to the underside.
And you can usually run your light over the top as well.
Made from stainless steel, the holder weighs approx. 10g.
Dimensions: 60 mm wide, 46 mm high. 50 mm bolt spacing.
Tubus part number #70025
