uxcell M2x3mmx3.5mm Female Threaded Brass Knurled Insert Embedded Nuts 20pcs Thread Size: M2; Product Name: Knurled Nut Material: Brass; Weight: 3g Package Content: 20 x Knurled Nut; Main Color: Gold Tone Height: 3mm/0.12" Outter Diameter: 3.5mm/0.14"(Max.D)