100Pcs Stainless Steel Countersunk Hex Socket Knurled Bolt M2.5x20mm Product Name : Countersunk Bolts;Material : Stainless Steel;Type : M2.5 x 20mm Thread Dia : 2.5mm / M2.5;Thread Length : 20mm / 0.8";Head Dia : 4.5mm / 0.18" Fit Hex Key Size : 2.1mm;Head Type : Pan Head Head Socket : HexType;Color : Black Weight : 78g;Package Content : 100(2%) xCountersunk Bolts