This is the wheel face insert that fits the GCM 1.9 BLANK beadlocks shown here:
http://www.gcmracing.ca/viewcategory.php?groupid=41
This insert will require M2x12 screws to attach it to the rim face.
Many other inserts are available in this series.
Choose the material quality you wish to use. The 'Versatile Plastic' will be a rougher finish than the 'Fine Detail Plastic' which is a very clean plastic print.