| Vehicle type: | DMBS | DTCL |
| Tops class number: | 109 | 109 |
| Former class number: | 109 | 146 |
| Original number range: | 50415-50419 | 56170-56174 |
| Revised number range: | - | 146 |
| Classification: | DMBS | DTCL |
| Introduced: | 1957 | 1957 |
| Built by: | D Wickham & Co | D Wickham & Co |
| Vehicle length (over body): | 57ft 0in | 57ft 0in |
| Height: | 12ft 4 1/2in | 12ft 4 1/2in |
| Width: | 8ft 3in | 8ft 3in |
| Seating: | 59S | 16F/48S |
| Internal layout: | 2+3S | 2+2F/2+3S |
| Gangway: | Inner end | Inner end |
| Toilets: | Not fitted | 1 |
| Weight: | 37 tons 10 cwt | 20 tons 10cwt |
| Brake type: | Vacuum | Vacuum |
| Power unit: | 2 x BUT (Leyland) of 150hp per vehicle | - |
| Horsepower (total): | 300hp | - |
| Transmission: | Mechanical | - |
| Max speed: | 70mph | 70mph |
| Coupling type: | Screw | Screw |
| Multiple restriction: | Blue square | Blue square |
| Door type: | Slam | Slam |
| Special features: | ||
| Body structure: | Steel | Steel |
| Notes: |