This bracket is compatible with the S and US Dream and with other FT bases.
The screws that can be used for this, depending on the rig, are:
Countersunk screw with hexagon socket according to DIN 7991
in sizes: M8x14 (I-Type slot 8 and B-Type slot 10).
Material: Steel, black galvanized
thickness: 5 mm
Mounting kit (optional):
for I-type slot 8
2x screw DIN7991, M8x14
2x T-nut guided I-type slot 8 [M8]
for B-type slot 10
2x screw DIN7991, M8x14
2x Slotted block with spring B-type slot 10 [M8]