... 4. colors for option 8x8 dot matrix led display Dot matrix LED, LED Dot Matrix lighting, led display8X8 dot matrix led, 5mm round dots8X8 dot matrix led for led display,round dots5X7 led display for in-door/out ... & semi-outdoor LED dot matrix 2.Hole diameter:1.9mm,3.0mm,3.7mm,4.8mm,5.0mm,7.62mm,8.0mm,10mm3.Various ...