HP Tubing Adaptor, 4-Hole HP To 2/3-Hole Tubing: Adapts 4-Hole HP to 2/3-Hole HP tubing, Provides Drive Air & Coolant Water, Does not provide Coolant Air.
HP Tubing Adaptor, 4-Hole HP To 3-Hole Tubing: Adapts 4-Hole HP to 3-Hole HP tubing only, Provides Drive air, water & air coolant.
2/3-Hole HP To 4-Hole Tubing: Adapts 2 or 3-Hole HP to 4-Hole HP tubing