Trekell Onyx #4 Filbert Brush - Short Handle

Trekell Onyx #4 Filbert Brush - Short Handle

Designed for artists who want the softness and absorbency of natural squirrel hair without using animal products, Trekell Onyx brushes deliver exceptional fluidity, water retention, and control for watercolor, gouache, ink, and fluid acrylic painting.

Like all Trekell premium synthetic brushes, Onyx features a blend of varying filament diameters with carefully tapered tips that more closely mimic the performance of natural brush hair. Combined with our ultra-soft synthetic filament engineered to replicate natural squirrel hair, these brushes provide exceptional water retention, smooth paint flow, and controlled paint release for effortless washes and seamless blends.

The Filbert shape combines the coverage of a Flat brush with the soft edges of a Round. Its gently rounded tip creates smooth blends, soft transitions, and natural-looking forms, making it a favorite for portraits, florals, and organic subjects.

Brush Specifications

• Bristle Length: 7/16"
• Bristle Width: 3/16"
• Handle: Short (6")
  
• Series: 8021
• Shape: Filbert
• SKU: 8021-4
• Designed in Japan • Made in Sri Lanka
  

Built to Last

Each brush is made with our Thermyx™ filament. During manufacturing, the bristles are heat-set to create built-in shape memory that helps the brush maintain its clean point, shape, and performance over time.

If the bristles begin to lose their shape, dip them in simmering water for a few seconds to help restore them closer to their original form. Reshape the bristles while warm and allow them to dry in place.

For even longer-lasting performance, apply Trekell Brush Restorer while the bristles dry to help them hold their shape between painting sessions.