Tuber (Tubular belay device)
| Tuber | |
|---|---|
 | |
| Other names | Tubular belay device, ATC, Reverso, Guide |
| Use(s) | Belay, Rescue techniques, ascending (atypical) |
| Pros | Well-tested and optimized, super-easy to give slack, useful for belaying of the second climber (guide mode), lightweight, can be used with double/twin ropes, multi-purpose |
| Cons | Does not provide assisted braking function, can bite into skin of the brake hand index finger if used inappropriately, in majority of the devices the setup for lowering of a second climber is cumbersome |
Tubular belay devices are the most commonly used belay devices during training of advanced climbing and rescue techniques, multipitching and management of twin/double ropes. In some countries/clubs, they have been replaced by assisted tubular belay devices for single-pitch training. They are prohibited in some gyms due to alleged security concerns (for details, see the security concerns section).
Belaying risks
Always hold/control the break strand at least with one hand and keep the break strand downwards. Keep your hand at least a few centimeters from the belay device to avoid pinching of the skin. Do not lift your hand too high (above the device) while giving the slack. One of the commonly seen bad habit is keeping the hand raised for a prolonged amount of time during belaying.
Always hold the break strand downwards unless feeding the rope 
If the break hand is too close, belayer risks pinching of the skin of the index finger.
TODO: Gallery - nohand