150pcs M3 Brass Knurl Insert Nuts Threaded Assortment Set Kit with Plastic Box Features: Made of brass, good corrosion resistance and never rust, durable e. Equipped with a plastic box, you can classify nuts in an organized manner, more convenient to carry and take out. Different sizes of nuts, can meet your different needs. Well fine surface treatment of the knurl nuts, bring no scratches to your hands. Used widely in the machinery industry. Specification: Condition: Material: Brass Screw nuts type: M3 Weight: 143g Content: M3x3mm          30pcs            M3x4mm          20pcs M3x5mm          20pcs             M3x6mm          20pcs M3x8mm          20pcs            M3x10mm        20pcs M3x12mm        20pcs            Package Included: 1 x Box of M3 Knurl Insert Nuts(included 150pcs)