[340PCS M2 M2.5 M3 M5 M6 Metric Knurled Nuts Assortment Set]: This set includes 340 pieces of M2, M2.5, M3, , M5, and M6 threaded insert nuts.[Heat Set Inserts for 3D Printing]: These brass heat set inserts are perfect for securing components in 3D printed parts and can be used in a of materials such as ABS, PLA, nylon, and more.[Knurled Design]: The knurled design ensures a secure fit while the threaded feature allows for easy installation.[Easy Assembly]: These nuts are perfect for projects requiring a secure fit and easy assembly.[Versatile Set]: This versatile set includes a of sizes and is perfect for any 3D printing enthusiast or professional.Metric threaded nuts(M2x2x3.2 M2x3x3.2 M2x4x3.2 M2x6x3.2)X26PCS(M2.5x2.5x3.5 M2.5x4x3.5 M2.5x6x3.5)X26PCS(M3x4x4.2 M3x6x4.2 M3x8x4.2 M3x10x4.2)X15PCS(M4x4x6 M4x6x6 M4x8x6 M4x10x6)X15PCS(M5x6x7 M5x8x7 M5x10x7)X6PCS(M6X6X8 M6X8X8 M6X10X8 M6X12X8)X5PCSColour:Photo ColorMaterial:MetalPackage Contents:340 x M2 M2.5 M3 M5 M6 Metric Knurled Nuts Assortment SetOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.