From Vitalii3D:

Lightweight 6061 aluminium carriage provides rigidity for Dragon Burner and Rapid Burner toolheads.
Compatibility:
– 6mm/9mm belts
– MGN12 carriage
– Voron 2.4
– Voron Trident
– Standard Flow AntHead
– Other Voron based printers with 4mm belts spacing

Contents:
– Aluminium parts
– Belt retainers
– 6 FSHCS M3x8mm bolts
– 2 BHSCS M3x6mm bolts

Printable Addons:
– BTT Eddy Mount
– Beacon/Cartographer Mount
– Endstop mount

https://www.printables.com/model/1227654-cnc-dragonburner-addons