460+7pcs M2 M2.5 M3 M4 M5 M6 Brass Threaded Inserts Kit for 3D Printing Plastic

Metric M1.6 to M12 Flat Washers Assortment Kit,304 Stainless Steel,for M1.6 M...

M4 x 10mm Threaded Inserts - 150pcs, Hex Drive, Bolt Fasteners for Wood Furni...

419pc PROFESSIONAL O-RING ASSORTMENT 32 SIZES METRIC

Kadrick 520Pcs M2 M3 M4 M5 Threaded Inserts Assortment Kit for 3D Printing Co...

M2 M2.5 M3 M4 M5 M6 M8 M10 Brass Hex Nuts Assortment Kit for Screws and Bolts

300Pcs Threaded Inserts M2 M2.5 M3 M4 M5 M6 Brass Heat Set Insert for Plastic...

M2 M2.5 M3 Heat Set Inserts for Plastic Threaded Brass Insert Nuts for 3D Pri...