Check the listing for details. 25-Pack Threaded Inserts - M8 x 12mm Brass Heat Set Insert Nuts 10mm OD. Condition: New. Listed at 14.61 USD. PRODUCT APPLICATION:Embed into 3D printer components by heat or ultrasound, or molded during injection. Can also secure precision electronic products (PCB board), computer products, furniture, etc.PRODUCT DETAILS & INCLUDES:✔ Material: Brass✔ Thread: M8 x 12mm✔ Head Diameter 10mm✔ Package Include: 25Pcs threaded inserts for 3d printingPRODUCT ADVANTAGES:1. Anti-Rust brass with superior performance, High thermal conductivity, corrosion resistance, high hardness, not easy to break and deform.. Smooth burr-free surface ensures smooth threading2. Geometric knurling shape design, which produces high friction and bite force after molding for maximum hold. The 45° spiral groove enhances the torque and tensile strength to prevent the thread slippageATTENTION:Heat or ultrasound heat insert into blind/through holes.