Magnetic ProbeMagnetic Probes are used for sample inspection. High intensity magnetic sampling probes are ideal for quality control personne to quickly and easily carry out product purity inspections on any powder,Website:http://www.astrongmagnet.com, ranulate or liquids for ferrous and lightly magnetic contamination.1.Diameter is 25mm. Lengt is made as per the customers requirements.2.All product contact parts are made by SS316L stainless steel.3.All of magnetic sampling probes are waterproof.