The Mini plate is available as an individual item or as part of the professional pack.
Mini plate       Standard plate
shown at the same scale
Mini with mini polishing cap
The 75 mm Mini plate replaces the 125 mm plate on the Flexidisc for sanding in confined areas.
Mini Plate & Discs
75mm Mini plate
Long life discs
Coarse 60 grit
Medium 150 grit
Fine 220 grit
Insert shaft
Fit nut and tighten
Flexidisc sander
B & D Murkin
UK main importers for
Le Tonkinois varnish
Flexidisc sander
Unscrew the black plastic nut on the Flexidisc,  note it has a left hand thread so unscrews clockwise.
Push out the shaft and fit into the Mini plate.
When re-fitting the standard plate ensure the locating pip on the plate locates in the hole in the shaft.
Tighten the plastic nut securely.

The Standard pack page contains pictures of the unassembled Flexidisc and how to re-assemble.
Standard plate                       Mini plate
shown at the same scale
Size comparisons
How it goes together