Using these fork blade protectors is a breeze. First, identify the right model for your fork width and length. Slide the protector over the fork. Once in place, use a clevis pin and cotter pin to hold it firmly. When using, make sure the pins are properly secured to avoid the protector coming off. As for maintenance, keep them clean from dirt and debris. You can wash them with mild soap and water. Check the protector regularly for any signs of wear and tear, and replace it if it's damaged. Remember, all measurements are approximate, so don't be alarmed by slight variations.