1) Compatible with M2, M2.5, M3, M5, M6 (1/4 inch), and M8 heat-insert nuts 2) Fits standard 936 soldering iron tips; also compatible with FX-888D soldering stations 3) Female-threaded design with knurled hand-tightening joint; threaded insert heads are removable when cooled for quick interchange 4) Made of brass for excellent thermal conductivity; flat contact surface prevents nut misalignment and ensures precise, fast embedding into plastic parts 5) Optimized tip geometry allows shallow, controlled insertion depth to minimize plastic deformation and prevent surface damage during embedding Specifications: - Manufacturing Process: CNC turning - Heating Core Thread Sizes: M2, M2.5, M3, M5, M6, M8 - Color: Assorted (no color selection available) - Material: Brass Package Includes: - 1 x Heating Core - 7 x Nut Heads - 1 x 936 Adapter Note: Actual product color may vary slightly due to lighting and screen settings. Dimensions are subject to a tolerance of ±1–3 mm.