Uxcell a15091700ux0358 M2x4 Through Hole Rivets Hollow Grommets PCB Circuit Board (200 Piece) Product Name : Hollow Copper Rivet; Material : Brass Plated Metal Color : Gold Tone; Head Dia : 4mm/0.15&#39;&#39; Total Size : 4mmx4mm(Dmax x H);Size : M2x4mm (Dmin x H) Weight : 18 g Package Contents : 200(+/-2%)Pcs x Hollow Copper Rivet