Profile may be best known for their in-house produced metal goods, but they also dabble in production with other types of materials, like these sweet plastic hub guards:

"Profile’s C-4 Plastic hub guards are now available.

Made right here in our factory out of Delrin, here are the specs:

Profile Front C-4 Guard:

-CNC machined out of Delrin

-Slides over knurled cone (only works with knurled cones) of Profile Mini, Profile Elite, and Madera Pilot Front Hubs and is held by compression once you tighten your front wheel.

-Not recommended for extremely abrasive surfaces (rough cement).

Profile Rear C-4 Guard:

-CNC machined out of Delrin

-Slides over rear 14mm Non-drive Jam Nut of Profile Mini, Profile Elite, and Madera V-2 Rear Hubs and is held by compression once you tighten your rear wheel.

–Does not work with 3/8 rear hubs.

-Not recommended for extremely abrasive surfaces (rough cement).

Profile Rear C-4 Drive Side Guard:

-Guard is Injection molded out of plastic, insert/jam nut CNC machined here in our factory.

-The proprietary C-4, 14mm drive side Jam Nut replaces existing Profile Mini, Profile Elite, and Madera V-2 jam nut, and then drive side guard pops onto jam nut.

–Does not work with 3/8 rear hubs.

-Not recommended for extremely abrasive surfaces (rough cement).

-Drive Side Guard and Jam nut sold together or individually."