uxcell&reg; 20 Pcs 9mm Hole Plastic Rivets Fastener Fender Bumper Push Pin Clips Product Name : Plastic Rivet;Material : Plastic Color : Black;Max. Diameter : 19mm/0.8" Stem Length : 27mm/1.1";Fit Hole Diameter : 9mm/0.35" (Not Including The Pin) Stem Diameter : Before Expansion: 9mm/0.35",After Expansion: 10mm/0.39";Rivet Total Height : 31mm/1.2" Net Weight : 44g;Package Content : 20 x Plastic Rivet