Check the listing for details. 12 Pcs Brass Heat Set Insert Tips for Threaded Inserts M2 M2.5 M3 M4 M5 M6 M8. Condition: New. Listed at 10.26 USD. Descriptions:Multi-Size Convenience - This set includes 11 precision-machined tip heads in various sizes (including M2x2pcs, M2.5x2pcs, M3x2pcs, M4x2pcs, M5x1pcs, M6x1pcs, M8x1pcs), ensuring you have the perfect fit for all your heat-set insert needs.Material - Made from pure brass, these tips offer excellent heat conductivity and corrosion resistance, providing durability and reliability for long-lasting performance.Feature - Changing the tip heads is a breeze. No need to remove the entire tip; simply unscrew the old head and screw on a new one, saving you time and effort.Advantage - Specifically crafted for inserting heat-set inserts into 3D printed parts, each tip head is meticulously designed to match the corresponding insert size, ensuring a smooth and clean installation.