25 Pcs M3 x 3mm Knurled Brass Threaded Heat Set Inserts 3D Printing

High quality brass threaded heat set inserts for adding strong, reusable threads to 3D-printed parts and thermoplastic housings. Unlike screws driven directly into plastic, these inserts provide metal-on-metal contact that can withstand repeated assembly without stripping.

Size: M3 x 3mm (length) x 4.2mm (diameter), 

Quantity: 25 PIECES

Material: Bass

Same day shipping from NY. 

The order under 9$ will be shipped without tracking.