Designed to compensate for longitudinal horizontal movements of rail threads from the effects of train load and temperature changes. The wits and movable rails are hardened by high-frequency high-frequency materials. The joint is equipped with counter-angles.
| Track width, mm | 1520 |
| Total length, mm | 12500 |
| Maximum static load on rail, kN | 245 |
| Maximum speed, km/h | |
| passenger trains | 140 |
| freight trains | 100 |
| Standard resource before withdrawal, million tons | 320 |
| Maximum compensated longitudinal movement, mm | ±.110 |
| Maximum length of shipping space, mm | 12500 |
| Maximum weight of shipping item, t | 1,3 |
| Weight (without bars), and no more | 4,5 |