This stud finder can be used for both steel and wood material by using strong magnet and stainless needle. Magnet enables you to find stud up to 25mm deep and needle up to 12mm. Design for think ply wood and dry wall. This product is antibacterial plastic. Packaged in English with English instruction included.
with strong magnet and stainless needle
safety lock with cover
Plastic handle is treated to resist bacteria
use for both steel and wood material
tell the depth of the wall