The Power Products 1/4" Nylon Air Brake Tubing Insert is the perfect solution for your air brake system needs. It is manufactured from CA360 and CA345 brass for superior strength and vibration resistance. No special tubing preparation is required, making installation quick and easy. This insert is designed for use with J844 type A and B tubing and is sure to provide reliable performance. FleetPride is your First Click in Heavy Duty®.