• You will receive a set of 400 self-drilling screws in sizes M3, M3.5, and M4, along with 3 drill bits. • Stainless steel screws, hard and rust-resistant. • Sharp tip for easy penetration of materials. • Compact and precise thread that does not deform or slip. • Transparent plastic box for storage and protection. • Use in household appliances, wooden furniture, repair and invention machines. • Ideal for industrial and construction fastenings.