M8x55mm 12.9 Alloy Steel Hex Socket Head Cap Screws Bolts Black 10Pcs Drive Type: Hex Socket; Head Style: Socket Cap Head; Material: 12.9 Alloy Steel Package Content: 10pcs x Socket Head Cap Screws; Product Name: Socket Head Cap Screws; Thread Size: 8x55mm/0.3"x2.2"(D*L) Weight: 235g; Main Color: Black Thread Pitch: 1.25mm; Total Length: 62mm/2.4" Head Size: 12 x 7mm/0.47" x 0.28"(D*T); Hex Width: 6mm/0.24"