Brand new tail gear box with higher material quality and easy maintenance. Utilizes dual point attachment design for zero play and higher precision control feel. Constructed with CNC aluminum alloy, with precision ball bearing at moving points, improving structure rigidity and smoothness, allowing rudder control to be more precise and smooth. 6061-T6 Aluminum alloy material and CNC processed. Use for T-REX 450. Must with H45183 New Tail Pitch Control Link.