Calf Breathing Pump

1. Each time the inner cavity pulls the gas, the gas and the tension are equal, saving energy and easy to pull.
2. The outer tube adopts T6 grade heat treatment 7050 aviation aluminum alloy, with strong heat dissipation capacity and no deformation.
3. Rod stainless steel, not easy to rust.
4. The piston can resist the temperature of -40 ℃ without stiffness and is light weight.
5. Upper and lower breathing bowl, food grade material, environmental protection, no odor.