Item Type: Standoff Spacer KitPurpose: Brass column screws on the motherboard of a computer case.Male Female Column Screw Thread Diameter: M2Male Female Column Screw Knurled Length: Approx. 3mm / 0.1in4mm / 0.16in5mm / 0.2in6mm / 0.24in8mm / 0.3in10mm / 0.4in15mm / 0.6in20mm / 0.8inMale Female Column Screw Thread Length: Approx. 3mm / 0.1inStainless Steel Screw Knurled Length: Approx. 4mm / 0.16inPackage List50 x M2 4mm Stainless Steel Screw50 x M2 Stainless Steel Nut20 x M2 3 + 3mm Male Female Column Screw20 x M2 4 + 3mm Male Female Column Screw20 x M2 5 + 3mm Male Female Column Screw20 x M2 6 + 3mm Male Female Column Screw20 x M2 8 + 3mm Male Female Column Screw20 x M2 10 + 3mm Male Female Column Screw20 x M2 15 + 3mm Male Female Column Screw20 x M2 20 + 3mm Male Female Column Screw1The thread is complete and deep, and the thread is neat and clear, and the force is even and not easy to slip. 2This brass standoff kit is glossy and burr-free, exquisite workmanship, fastened and durable. 3Processed with brass rods, original materials are strictly controlled, and recycled brass is never used. 4This standoff nut kit has complete specifications to meet your different needs. 5Simple operation, light weight and in small size, equipped with a box for easy storage.