Specification:

Brand: SpeedyBee
Model: Master3X Modular Frame Kit
Frame: Speedybee Master3x Frame
Wheelbase: 171mm
Carbon Plate Thickness: Top Plate: 2.0mm, Middle Plate: 2.0mm, Bottom Plate: 2.0mm, Arm: 4.0mm
Camera Installation Pitch: 19/20mm
Stack Installation Height: 11mm
Stack Mounting Holes: 25.5x25.5mm
Compatible VTX:
Injection Molded Head (DJI O3 Air Unit, Link, TX800, TX Ultra; Except For DJI O3, Other Modules Require Additional 3D Printed Parts),

DJI O3 Aluminum Alloy Head (DJI O3 Airunit, Link, TX800, TX Ultra; Except For DJI O3, Other Modules Require Additional 3D Printed Parts),

DJI O4 Pro Aluminum Alloy Head (DJI O4 Pro)

Propeller Size: 3~3.6 Inches
Motor Mounting Holes: 9~12mm
Weight: 87±2g (Without Head)
Recommended Motor: 1507/1804/2004/2006/2105.5
Recommended KV: 4s 3000kv~3600kv, 6s 2200~2750kv
Max Supported Battery Size: 67mm (L)x31mm (W)x40mm (H)
Recommended Battery: 4s Lipo / Lihv750mah~1100mah 6s 650~850mah
GPS Supported Size: 18.1x18.1mm (Other Sizes Require Replacement Of Printed Parts)

Package included:

1 x Master 3X (Without Head)
or
1 x Master 3X Frame (Injection Molded Head)
or
1 x Master 3X Frame DJI O3 (Aluminum Alloy Head)

or
1 x Master 3X Frame DJI O4 Pro (Aluminum Alloy Head)