High quality laptop Notebook computer screw, made of alloy steel,oxidative blackening. Popular size:500pcs M2,M2.5,M3 laptop screws kit in a handy plastic with label Perfect for repair laptop,10 most used size:M2*3 M2*4 M2*5 M2*6 M2.5*3.5 M2.5*4 M2.5*5 M2.5*6 M2.5*8 M3*3