314Pcs Threaded Insert for Plastic, BTREEFLO M2 M2.5 M3 M4 M5 M6 Female Thread Metric Knurled Nuts Brass Heat Set Insert Embedment Nut Assortment Kit for 3D Printing Injection Molding

描述

314Pcs Threaded Insert for Plastic, BTREEFLO M2 M2.5 M3 M4 M5 M6 Female Thread Metric Knurled Nuts Brass Heat Set Insert Embedment Nut Assortment Kit for 3D Printing Injection Molding