10PCS/Pack M6 M8 M10 M12 Hexagon Screw Nut Plastic Protective Cover Specifications: M6 M8 M10 M12 (Metric) Product Information: OPP bag packing Packing size: 14102cm Product size: M6 1.81.81.5cm Gross weight: 6g (10PCS) M8 1.81.81.8cm Gross Weight: 14g (10PCS) M10 2.32.32.3cm Gross weight: 20g (10PCS) M12 2.52.52.5cm Gross Weight: 28g (10PCS)