For perfect alignment of head and shank. If you’ve ever soldered a head onto a shank only to find it misaligned by a few degrees, you’ll love these tweezers. Feature patented LaVaque visual alignment for soldering settings accurately the first time, every time. Curved, grooved tip securely holds the shank in place while the transparent glass base secures the head, allowing you to see from the top and all sides for perfect alignment. Replaceable high-temperature glass withstands direct flame and soldering temperatures required for gold and silver, lasting for dozens of jobs. Not recommended for platinum and other metals that require higher soldering temperatures.