Cosmos&reg; 100 Pieces Red Color PC Motherboard Screw Insulating Fiber Washers Material: Fiber Net Weight: 10g; Package Content: 100Pcs(+/-2%) x Insulating Washers Main Color: Red; Inner Diameter (Approx.): 3mm / 0.12" Outer Diameter (Approx.): 10mm / 0.4" Thickness (Approx.): 0.8mm / 0.03"