This countersunk screw replacement set is made of , which can withstand use. Features the stainless steel material, which has high durability, not easy to deform. Fine workmanship, ensures practicality. Features -Color: Black -Material: steel -Size: 1.00X1.00X1.00cm/0.39X0.39X0.39in - Thumb screws are perfect replacement for or lost computer case fixing screws. - Rustproof and resistant against corrosion screws, can be used for a long time. - Countersunk head design enables driving where it doesn't have sufficient space for wrenches. - Small and compact size, light in weight, you can carry and use it wherever you go. - It is manufactured with professional technology to ensure the of the product and can work for a long time. Package list: 30 x M3x8x1 paper washers x cross countersunk bolts x nickel-plated cross countersunk bolts x .5x6 flange screws x M3x6 hexagonal copper pillars 30 x .5x5 Cross screw bolts 30 x M3x4 cross screw bolts 30 x M3x5 cross screw bolts 6 x .5x5 plated thumb screws 6 x .5x5 black thumb screws