These are 9x16 Charlieplexed LEDs designed to match with the .

You don't get any resistors or driver chips with this grid, its just a mess of LEDs in a charlieplexed arrangement

Technical Details

Product Dimensions: 43.3mm x 28.1mm x 2.4mm / 1.7" x 1.1" x 0.1"

Product Weight: 5.7g / 0.2oz