Rohema JB 3 brushes have resistant bristles made of nylon. This plastic comes from European manufacturing and has a very smooth surface. It produces rich, low-frequency sounds. Overall, the JB 3 nylon brushes sound a bit bulkier than their metal counterparts with thin wires. The JB 3 brushes' handle is made of durable Hickory and has a diameter of 15.5 millimeters.
| Material | Nylon |
| Handle | American Hickory |
| Weight | medium |
| Length | 380 mm / 14.961″ |
| Diameter | 15 mm / .591″ |