Specification Brand : YuGtcen BulletPoint1 : Standard Sizes Assortment - You will get 320pcs heat set inserts, including M2 M3 M4 M5 M6 female nut inserts in different lengths and diameter. There are total 15 sizes. Large quantity and full sizes to meet your daily needs to connect numerous 3D printing accessories. BulletPoint2 : High Quality - The threaded insert is made of brass, is sturdy, durable, corrosion-resistant, abrasion resistant and not easy to break or deform. These brass threaded inserts have great electrical conductivity that makes 3D printer to work effectively. BulletPoint3 : Sturdy Hold - The threaded inserts for plastic are easy to use. can be inserted in tapered holes by heating or ultrasonic, when the plastic cools and hardens, the threaded sleeve will be firmly anchored. Whith the unique geometry of the threaded sleeve, the heat set insert holds firmly in the pressure part. BulletPoint4 : Organized Case - The nuts come in a portable clear box with corresponding sizes label. It is convenient for you to put away and store, which allow you to get the one you need quickly, improving your project efficiently. BulletPoint5 : Wide Application - These hreaded insert nuts are suitable for all thermoplastics and various plastics, such as PLA, PPS, ABS, PETG, PP and more. You can install these brass inserts on 3D printers, electrical injection molding, laptop molding plastic shells and more. Color : 320pcs DriveSystem : Spline DriveSystem1 : Internal Hex DriveSystem2 : External Hex ExteriorFinish : Brass ExternallyAssignedProductIdentifier1 : 0744337418687 ExternallyAssignedProductIdentifier2 : 744337418687 FinishType : Polished ItemName : 320pcs Threaded Inserts, M2 M3 M3 M4 M5 M6 Metric Knurled Nuts Heat Inserts Assortment Female Brass Nuts Heat Set Insert for Plastic Parts 3D Printing Components ItemPackageDimensions_Height : 5.82 inches ItemPackageDimensions_Length : 8.66 inches ItemPackageDimensions_Width : 0.68 inches ItemPackageQuantity : 1 ItemTypeKeyword : hardware-nut-inserts Manufacturer : YuGtcen Material : Brass MeasurementSystem1 : Metric MeasurementSystem2 : Inch MetalType : Brass MetalType1 : Zinc MetalType2 : Bronze ModelNumber : b20122104ap0114 NumberOfItems : 320 NumberOfPieces : 20 PartNumber : YuGtcen-YUG23111011/2 ProductDescription : Product Included: 320pcs threaded inserts for plastic ProductSiteLaunchDate : 2023-12-12T08:00:00.000Z Size : Assorted (320pcs) SupplierDeclaredDgHzRegulation : not_applicable SupplierDeclaredHasProductIdentifierExemption : 1 UnspscCode : 31161700