This conductive applicator brush has 0.003" stainless steel wire and a lightweight, chemical resistant, non-magnetic, stainless steel handle. All components of this brush are FDA and RoHS compliant. Manufactured using strong mechanical clamping for maximum wire retention, and is adhesive-free to prevent contamination on surface areas that could be caused by leaching. This high quality brush has a trim of 1/2", handle dimensions of 4-3/4" length x 5/16" diameter, brush width of 5/16". This brush has a maximum use temperature of 900°F.