Shop › Set of 4 Cowbell wheel center caps 3D printed $50 Set of 4 Cowbell wheel center caps 3D printed $50 $50.00 I had some center caps reproduced for the cowbell wheels. These are 3D printed sold as a set of 4 $50 plus shipping I had some center caps reproduced for the cowbell wheels. These are 3D printed sold as a set of 4 $50 plus shipping Add To Cart Added!