Material:Copper plated steel

150 PCS Package include:

M3 x 50pcs: inside diameter: 3.5mm/0.13

M4 x 20pcs :inside diameter: 4mm/0.15

M5 x 20pcs :inside diameter: 5mm/0.2

M6 x 20pcs :inside diameter: 5.5mm/0.21

M8 x 20pcs :inside diameter: 8mm/0.3

M10 x 20pcs: inside diameter: 9mm/0.35

Conversion: 1inch=2.54cm,  1cm=0.393inches  

Warm Tip :  Please be reminded that due lighting effects, monitor's brightness/contrast settings etc

, there could be some slight differences in the colour tone of the website's photo and the actual item