Features: The vertical heat insert tool features stable metal stand with adjustable knurled nut slots, ensuring precise hot melt brass insertions for various 3D printer parts and accessories. Its eccentric fine tuning mechanism and multifunctional base slots allow customizeds tension control and workpiece clamping during 3D printing assembly. for 3D printing enthusiasts, maker, and technicians requiring nut insertion for printer frame construction or part repairs. Perfect for workshops and maker space where secure brass knurled nut installations for assembling 3D printed mechanical components. Engineered with rigid vertical structure, this insertion holder minimizes vibrations during operations while supporting diverses 3D printer models and upgrades projects. Specifications: Materials: Metal Color: Black Size:as picture show Clamps with diameter of 17.2mm/18mm/19mm, slots with different soldering irons Package Includes: 1PC Nut Insertion Holder note: Please allow 0-1cm error due to manual measurement. make sure you not mind before bid. Due to the differences between different monitors, the Pictures may not reflect the actual of the item.