The project holder allows you to attach the Arduino® UNO and the included breadboard together. It contains two grooves (one groove size is 88 x 60 mm), which is the just right size to fit a 400 holes breadboard; the other groove is for the Arduino UNO. The position of 4 M3 screw holes fits the Arduino UNO mounting holes. The holder comes with 4 screws (M3 x 8).
Features:

1. Includes:
   1. breadboard (400 holes)
   2. project holder for Arduino UNO (not incl.) and breadboard
   3. 4 M3 x 8 screws to hold the Arduino UNO (not incl.)

Specifications:

1. dimensions: 160 x 106 mm
2. max. breadboard size: 88 x 60 mm
3. weight: 50 g

ce_rohs_open.pdf