Please read the following table in Markdown format and then answer the question according to the table. Table cells in one row are seperated by '|', and different rows are seperated by '
'.

Table:
| Original NER class | 1914 NER class | LNER Class | Cylinders | Driving wheels |
| --- | --- | --- | --- | --- |
| M1 | M | D17/1 | (2) 19″ x 26″ | 7′ 1¼″ |
| Q | — | D17/2 | (2) 19½″ x 26″ | 7′ 1¼″ |
| Q1 | — | D18 | (2) 19½″ x 26″ | 7′ 7¼″ |
| M (new) | — | — | HP (1) 20″ x 26″ LP (1) 28″ x 26″ | 7′ 1¼″ |
| M (1898) | 3CC | D19 | HP (1) 19″ x 26″ LP (2) 20″ x 26″ | 7′ 1¼″ |
Question:
What driving wheels are on the m1 original NER class?
Answer:
7′ 1¼″