uxcell 5#-40x1/8inch Hex Socket Set Cap Point Grub Screws 100pcs Drive Type: Hex Socket; Head Style: Flat Head; Material: 12.9 Alloy Steel Package Content: 100(+/-2%)pcs x Grub Screws; Product Name: Grub Screws Thread Size: 1/8"(L); Weight: 8g Main Color: Black; Total Length: 5/8" Thread Diameter: 5#; Thread Counts: 40