A kit for repairing a damaged bracket used to screw the lamp mounting bracket.
The kit contains 4 files (two are necessary): 
Front cover 
Inside mounting
Hole spacing of 85mm - it is not necessary - but it is helpful for the importance of the hole. 

Hex screw knob - also not necessary if Your original screw will fit. 

Required purchase parts - number of pieces per led par: 
Screw M3 conical screw 8mm (10mm alternatively) - (8 pieces).
M3 nut - (8 pcs.).
Screw M6 hex 16mm (14-20mm alternatively) - (2 pieces).
M6 nut - (2 pcs.)

Tools:
Screwdriver
Drill 8mm and 4mm

Filament for parts on lamps suggested at least PETG, for “hole spacing” PLA is ok.