This is an optional replacement Align 600XN Metal Drive Gear Assembly, intended for use with the T-Rex 600XN nitro helicopter kits. 600XN Metal Drive Gear Assembly utilizes all-aluminum CNC machining technology for a stronger structure and coefficient of friction.
Includes:

• (1) 600XN Metal Gear Assembly(L)
• (1) 600XN Metal Gear Assembly(R)
• (4) 700X Aluminum Hexagonal Bolt (M3x36mm)
• (2) Socket Screw (M3x10mm)
• (4) Socket Screw (M3x8mm)