Topeak Tetrafender G1 Front Fender - Fits Up To 650/700 x 50 Gravel Tire BLK MFPN=11.4118.073.001 Four of the holes are

Four of the holes are threaded and one is a normal through bolt hole (done for Surly compatibility)

Diamond knurl pattern

Female axle

SRAM Model ID: CN-951-A1

Topeak Tetrafender G1 Front Fender - Fits Up To 650/700 x 50 Gravel Tire BLK MFPN=11.4118.073.001 Four of the holes areThe perfect quick mount dual color rear fender that attaches to gravel bike frames with hook and loop straps easily and securely. Adjustable front struts provide a closer fit to the tire and excellent mud spray protection. Unique two piece dual tone design provides short or longer fender usage options for a precise fit with your bike. A highly polished underside helps prevent dirt buildup and aids in cleaning. Included 3M reflective decals provide