[No burr on the internal thread]: The internal thread of Soldering Helping Hand is finely designed, and the parts fit tightly together to the stability and durability of the fixture [Good sealing]: Welding Holder has sealing performance, ensuring stable work during welding and avoiding welding failures caused by looseness [Aluminum alloy material]: Soldering Helping Hand is made of high-quality material, which has strong anti deformation ability and can withstand high intensity working pressure to long term use without deformation [Strong clamping force]: Welding Holder can firmly clamp the workpiece and provide strong clamping force to prevent the workpiece from falling off during welding, ensuring efficient completion of welding work [360° fixation]: Soldering Helping Hand supports 360° all round fixation to meet the needs of various complex welding angles and improve welding flexibility and efficiency, Weight: 0.28108938405 pounds, Manufacturer: Gishbjka