A pair of the spring clips for holding the glass in place. These clips can be used on all 4 corners of the bed, or on the back two corners as preferred.
These are official Ultimaker spare parts, compatible with the following printers:
Spring used in the build plate assembly for the Ultimaker 2 series and Ultimaker Original+ printers.
Official UltiMaker spare part for the following machines:
Ultimaker Original+
Ultimaker 2
Ultimaker 2 Extended
Ultimaker 2 Go
Ultimaker 2+
Ultimaker 2 Extended+