Wheel Pant Attachment Brackets. These simple brackets serve as both wheel collar and wheel pant brackets. They are made of heat treated, tempered steel. They clamp securely onto the axle, and the clamping pressure can be adjusted from movable to rigid. The adjusting screw is angled for easy access with a ball driver. They are about the same width as a wheel collar, so only a washer is needed between the wheel and bracket.