Designed for longitudinal compensation of track movements on bridges due to temperature changes and the impact of train load. All joints are laid in the grain direction. The wits and movable rails are hardened by high-frequency high-frequency materials.
| Total length, mm | 12500 |
| Maximum static load on rail, kN | 245 |
| Standard resource before withdrawal, million tons | 320 |
| Maximum compensated longitudinal movement, mm | from 0 to 540 |
| Maximum length of shipping space, mm | 12500 |
| Maximum weight of shipping item, t | 2,4 |
| Weight (without bars), and no more | 4,8 |