Your search for "poly brush" revealed the following:
S50 Short Handle CLINGON! Furniture Paint Brush
$52.00A must-have brush for chalk painters and furniture refinishing! Features:-Light weight-Extreme durability-Anti shedding-The very best bristle shape retention-Can be used...
Modern Masters Metal Effects
$39.95Combine the ancient art of patinization with modern day paint technology to formulate Metal Effects oxidizing paints, patinas and rust...