This description is distilled directly from the VO website:

These classic facetted-style aluminum fenders are based on an old French design. They have a simple, yet elegant pattern that's lovely on both classic and modern bikes. They're 45mm wide, designed for 700c and 27" wheels, and work with tires up to 37mm wide. We include a hardware kit to work with almost any type of mounting in the same finish as the fenders.

• Fenders are made from aluminum alloy for strength while staying lightweight
• Rear fender is 120cm long and the front is 90cm long
• Both come pre-drilled for stays. Front is pre-drilled for a fork crown mount
• Hardware kit includes: 5mm polished aluminum stays, R-clips and screws, L bracket, reinforcement plates, stay-to-fender closed eyelet bolts, fork crown daruma, sliding bracket, leather washers, and detailed installation instructions

Velo Orange fenders are designed to be full coverage, which means that you and your bike's drivetrain will stay clean of road muck and grime. Both front and rear fenders have full wrap around the width of your tires to eliminate spray in all directions.