Durable brass knurled threaded inserts for long lasting performance Material and construction: Brass knurled inserts designed for secure embedding and reliable fastening over time Versatile assortment: 330 pieces in multiple sizes to fit a range of bore diameters and thread requirements Practical for projects and home tasks: Reinforce printed parts or secure materials in everyday builds Wide range of applications: Can be embedded in various plastics for hardware projects and improvements Key benefits: Corrosion resistant brass; knurled design provides strong grip in the host material for repeat fastening Compatibility and sizing: Sized to accommodate standard bore and thread needs across the kit Use scenarios Reinforcing 3D printed enclosures and plastic parts to improve load carrying capacity Attaching brackets or hardware to plastic panels in furniture, electronics housings, or home projects Repairing or replacing damaged threaded holes in plastic components by installing brass inserts