This handy press-in spacer will provide 7.9mm spacing between the top and bottom surfaces. If needed the mounting lock mechanisms can be released to allow the removal of the attached items.Fastener:Fastener Type: Stand-offLength: 7.9mmTop Hole Size - 4.0mmTop PCB Thickness - 1.2mm to 1.7mmBottom Hole Size - 4.8mm to 5.0mmBottom Material Thickness - 0.8mm to 2.0mmMaterial - NylonPack Size - 8pc