300 Pcs M3 Heat Inserts M3 x 4mm x 5mm Brass Threaded Inserts 3D Printing Knurled Metric Nuts for Plastic, 3D Printing Components

Description

300 Pcs M3 Heat Inserts M3 x 4mm x 5mm Brass Threaded Inserts 3D Printing Knurled Metric Nuts for Plastic, 3D Printing Components