This conductive applicator brush has 0.003" soft brass wire and a stainless steel tube handle. Constructed with strong mechanical clamping for maximum fill retention, and contains no adhesives that can leach out and contaminate work areas. 1/8" trim, brush face 3/16" wide, and a handle length of 3-1/2" x 1/8" diameter. This brush has a maximum use temperature of 500°F.