ITEM NAME:5 in 1 RAB Holder Breadboard ABS Base Plate for Arduino UNO R3 MEGA2560 #gib Store Home Promotion Hot Item Add to Fav.Portable, easy to move, carry, this RAB holder is stable to fixed on the table for your needs;. 1 x RAB Holder. 5.4cm x 10.3cm x 0.45cm/2.13in x 4.06in x 0.18in Product material: ABS. Card slot size: 0.51cm x 16cm x 5.6cm /0.2in x 6.3in x 2.2in8.5cm x 5.7cm x 0.45cm/3.35in x 2.24in x 0.18in.