| Protech | B1021 | Analog | 2.1 g | 20.1×6.1×6.1 mm | 4.8V 0.3 kg-cm | 4.8V 0.20 s/60° | | Bushing | Plastic |
| Protech | B1044 | Analog | 4.4 g | 19.1×7.6×16.0 mm | 4.8V 1.3 kg-cm | 4.8V 0.10 s/60° | | Bushing | Plastic |
| Protech | B1049 | Analog | 4.9 g | 20.1×7.9×16.3 mm | 4.8V 1.5 kg-cm | 4.8V 0.10 s/60° | | Bushing | Plastic |
| Protech | B1054 | | 5.4 g | 20.1×7.9×17.5 mm | 6.0V 1.1 kg-cm | 6.0V 0.10 s/60° | | | |
| Protech | B106 | | 4.3 g | 17.5×6.6×17.8 mm | 4.8V 0.7 kg-cm | 4.8V 0.10 s/60° | | | |
| Protech | B1062 | Analog | 6.2 g | 22.1×9.9×17.5 mm | 4.8V 1.3 kg-cm | 4.8V 0.10 s/60° | | Bushing | Plastic |
| Protech | B109 | Analog | 9.0 g | 26.9×8.9×23.9 mm | 4.8V 1.5 kg-cm | 4.8V 0.16 s/60° | | Bushing | Plastic |
| Protech | B112 | Analog | 16.0 g | 29.5×14.0×24.9 mm | 4.8V 2.5 kg-cm | 4.8V 0.14 s/60° | | Single Bearing | Plastic |
| Protech | B150 | Analog | 5.0 g | 22.1×10.9×21.1 mm | 4.8V 0.6 kg-cm | 4.8V 0.12 s/60° | | Bushing | Plastic |
| Protech | B160 | Analog | 9.0 g | 23.9×9.9×18.0 mm | 4.8V 1.5 kg-cm | 4.8V 0.12 s/60° | | Bushing | Plastic |
| Protech | B170 | Analog | 9.0 g | 23.9×9.9×18.0 mm | 4.8V 1.5 kg-cm | 4.8V 0.12 s/60° | | Bushing | Plastic |
| Protech | B180 | Analog | 9.0 g | 21.1×9.9×24.9 mm | 4.8V 1.1 kg-cm | 4.8V 0.12 s/60° | | Bushing | Plastic |
| Protech | B206 | Digital | 11.0 g | 22.9×11.9×20.1 mm | 4.8V 2.0 kg-cm | 4.8V 0.17 s/60° | | Bushing | Plastic |
| Protech | B207 | Digital | 16.0 g | 24.4×11.9×22.9 mm | 4.8V 2.2 kg-cm | 4.8V 0.14 s/60° | | Bushing | Metal |
| Protech | B305 | Analog | 45.0 g | 40.9×20.1×36.1 mm | 4.8V 3.5 kg-cm | 4.8V 0.20 s/60° | | Single Bearing | Plastic |
| Protech | B405 | Analog | 18.0 g | 32.0×13.0×26.9 mm | 4.8V 2.5 kg-cm | 4.8V 0.12 s/60° | | Single Bearing | Plastic |
| Protech | B505 | | 62.1 g | 40.9×20.1×39.9 mm | 4.8V 5.5 kg-cm - 6.0V 7.0 kg-cm | 4.8V 0.22 s/60° - 6.0V 0.16 s/60° | | | |
| Protech | B515 | | 62.1 g | 40.9×20.1×39.9 mm | 4.8V 7.5 kg-cm - 6.0V 9.0 kg-cm | 4.8V 0.17 s/60° - 6.0V 0.13 s/60° | | | |
| Protech | B525 | | 62.1 g | 40.9×20.1×39.9 mm | 4.8V 12.5 kg-cm - 6.0V 15.1 kg-cm | 4.8V 0.22 s/60° - 6.0V 0.17 s/60° | | Single Bearing | Metal |
