Features Professional and practical design, compact appearance, easy to carry and use. Smooth appearance with clear, even and burr-free threads. Widely used in various precision instruments, meters and electronic products, etc. Beautiful workmanship, exquisite application, durable to use. There is a box that you can store and convenient to carry. Specification: Item Type: Headless Screws. Material: Stainless Steel Model: M3/M 4/M5/M6/M8 Including:20 M3x3mm Headless Screws 20 headless screws M3x4mm 20 headless screws M3x6mm 20 headless screws M 4x4mm 20 x head screws M 4x6mm 20 headless screws M5 × 5 mm 20 M5 × 8mm headless screws 20 headless screws M6x6mm 20 headless screws M6x10mm 20 M8 × 8 mm headless screws Package List:20 screw without head M3x3mm 20 headless screws M3x4mm 20 headless screws M3x6mm 20 headless screws M 4x4mm 20 headless screws M 4x6mm 20 headless screws M5 × 5 mm 20 M5 × 8mm headless screws 20 headless screws M6x6mm 20 headless screws M6x10mm 20 headless screws M8 × 8 mm Package List 20 x M3x3mm Grub Screw 20 x M3x4mm Grub Screw 20 x M3x6mm Grub Screw 20 x M4x4mm Grub Screw 20 x M4x6mm Grub Screw 20 x M5×5mm Grub Screw 20 x M5×8mm Grub Screw 20 x M6x6mm Grub Screw 20 x M6x10mm Grub Screw 20 x M8×8mm Grub Screw