Allen Bolt M2.5 X 8MM (20 Pieces)

Specification: Type: M2.5 (2.5mm Bolt Diameter) Bolt Head Outer Diameter: 4.45 mm Bolt Length: 10 mm Bolt Head Style: Round Bolt Drive Style: Hex Socket Color: Black Nut Type: Hex Nut Outer Diameter: 5 mm Allen Key size Required: 2 mm. Hardness is 2 times higher than copper,10 times higher than aluminum.