Item Type: Standoff Spacer Kit Purpose: Brass column screws on the motherboard of a computer case. Male Female Column Screw Thread Diameter: M2 Male Female Column Screw Knurled Length: Approx. 3mm / 0.1in 4mm / 0.16in 5mm / 0.2in 6mm / 0.24in 8mm / 0.3in 10mm / 0.4in 15mm / 0.6in 20mm / 0.8in Male Female Column Screw Thread Length: Approx. 3mm / 0.1in Stainless Steel Screw Knurled Length: Approx. 4mm / 0.16in Package List 50 x M2 4mm Stainless Steel Screw 50 x M2 Stainless Steel Nut 20 x M2 3 + 3mm Male Female Column Screw 20 x M2 4 + 3mm Male Female Column Screw 20 x M2 5 + 3mm Male Female Column Screw 20 x M2 6 + 3mm Male Female Column Screw 20 x M2 8 + 3mm Male Female Column Screw 20 x M2 10 + 3mm Male Female Column Screw 20 x M2 15 + 3mm Male Female Column Screw 20 x M2 20 + 3mm Male Female Column Screw 1The 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.