The original synthetic brush filament, black nylon was developed just before World War II and gained wide use in the next decade with the growth in use of water-based paints. Deep flagg tips are created in-house for super smooth paint finishing. A hand-formed chisel provides sharp, accurate cutting-in and preserves the flaggs. -We blend 100% solid-round-tapered DuPont™ Tynex® Nylon for maximum durability, proper flex, paint pick-up and release. -Wonderful for interior and exterior applications. -Extensive selection of sash, trim, wall, and specialty brushes, including a full range of "block" brushes with detachable grips for use with extension poles.
| Size | Thick | Trim Length |
| 4" | 1 1/4" | 3 15/16" |
| 5" | 1 1/4" | 4 3/16" |
| 6" | 1 1/4" | 4 3/16" |
