134pcs PC Computer Screws Assortment Kit for Computer Hard Drive Mother Board Standoffs Fan CD-ROM Assembling One set get all buliding pc computer screws:Set included:1:hard drive screws;2:fan;3:Motherboard fixed screws; 4:motherboard standoffs with brass and iron two types; 5:M3 washer;6:Chassis screw;7:thumb screw 8:CD-ROM set screws Package:4pcs Thumb screw(#6-32x6mm) , 20pcs Chassis screw (#6-32x6mm), 20pcs screws for hard drive(#6-32x5BM) 20pcs case screw for motherboards fixed screw(M3x6) , 10pcs case fan screw (5x10KB) 20pcs CD drive set screw (M3x5),10pcs brass pillar standoffs for mainboard m3x6 10pcs iron pillar standoffs for mainboard m3x6, 20pcs insulated washers in one plastic case(M3)