uxcell M2.5x12mm Button Head Hex Socket Cap Screw Bolt Black 50pcs Drive Type: Hex Socket; Head Style: Button Head; Material: 10.9 Alloy Steel Package Content: 50(+/-2%)pcs x Button Head Screws; Product Name: Button Head Screws Thread Size: M2.5x12mm /0.1"x0.47"(D*L); Weight: 26g Thread Pitch: 0.45mm; Total Length: 13mm/0.51" Hex Socket Width: 1.5mm/0.06"; Head Size: 5x1mm/0.2"x0.04"(D*H)