ITEM NAME:240Pc Car Body Plastic Push Pin Rivet Fasteners Trim Moulding Clips Screwdriver Specification.These rivet fasteners are made of nylon material, suitable for car use. 1/4" (6.4mm) hole size; panel range.095"-.540" - Nylon Shield Retainers --Qty: 20. 9/32" (7.1mm) hole size; panel range.125"-.310" - Nylon Shield Retainers -- Qty: 20.