1.9mm

Size: 20.2mm*20.2mm*5.9 mm

Hole distance：1.9mm

3.0mm

Dize: 32mm*32mm*6.08mm

Hole distance: 3.0mm

3.75mm:

Size: 38mm*38mm*7.2mm

Hole distance: 3.75mm

5.0mm: 

Size: 60.2mm*60.2mm*9.2mm

Hole distance: 5mm