(both 270mm and 220mm widths) and also the new NSC GB20 gill.
The brushes for the NSC GC gills are bristled with 0.4mm white nylon, whilst the brush for the 'ERA' gill is bristled with top quality hog bristle - as recommended by NSC themselves.
All brushes have a barrel made from highly durable reinforced plastic which is recyclable, and the brush for the GB20 gill has stainless steel pivots.