The knife shaft is made of high-quality chrome vanadium steel, manufactured by hard heat treatment, and the surface is electroplated, which can effectively prevent the oxidation of the knife head and keep it from rusting for a long time.

Pen case: ABS material, smooth and burr-free, and feel comfortable.

No need for built-in battery, continuous sensing and display, liquid crystal display senses AC voltage, distinguishes the zero-phase line, and finds the break point of the phase line.

Measuring range: 12v～240v