Salmon Hygiene Technology has developed a revolutionary improvement in brush filament retention, whereby each tuft is stapled into the brush back with food grade stainless steel staples and then epoxy resin is floated in. The resin permeates the bottom of the tuft hole, covering the filaments and staples as it goes. The resin seals the face of the brush, secures the filaments, and prevents the accumulation of dirt or moisture in the tuft holes. No other manufacturer in the world employs both resin set technology along with food grade stainless steel staples.