Giga Jul

The Most Versatile Belay Device Ever

Edelrid belay device Giga-Jul mobile
Giga Jul

The Most Versatile Belay Device Ever

The Best of Both Worlds

Giga Jul—Combines the Functions Of a Standard And an Assisted Braking Tuber

Edelrid belay device Giga-Jul NEW
Edelrid belay device Giga-Jul standard and assisted braking tuber

The Giga Jul is particularly light and simultaneously robust and abrasion resistant. This is made possible by a smart hybrid construction of aluminum and steel. The main body of the Giga Jul is made from particularly light aluminum. Parts which are at risk of wear (for example the friction channels) are made from robust stainless steel. Another chapter in our Steel Story.

By moving the green slider, the Giga Jul is instantly transformed from an assisted braking tuber to a standard tuber.



Edelrid Sicherungsgeräte GigaJul Assisted Icon
Assisted braking guide mode
Edelrid Sicherungsgeräte GigaJul Manual Icon
Guide mode
Edelrid Sicherungsgeräte GigaJul Robust Icon
Extremely abrasion-resistant
Edelrid Sicherungsgeräte GigaJul Durchmesser Icon
Diameter: 7.1–10 mm
Edelrid Microsite Zertifizierung Icon
Certification: EN 15151-2
Edelrid Microsite Gewicht Icon
Weight: 121 g



In recent years, the use of assisted braking tubers has dominated sport and alpine climbing. Its advanced safety reserves, which result from its assisted braking when arresting a fall, makes the use of this type of device especially advisable. For this reason the Alpine Associations of Germany, Austria and Switzerland (DAV, ÖAV, SAC) recommend the use of assisted braking tubers.

Nevertheless, there are applications (particularly in alpine climbing) where the use of standard tubers is still advantageous. Especially when secured from a fixed point (belay station), their highly dynamic braking performance may be preferred. Abseiling and belaying the second with a doubled rope is markedly more comfortable with a standard tuber.


How do I operate the Giga Jul correctly?

Assisted braking guide mode

Installation assisted braking guide mode

Edelrid GigaJul Sichern Autotuber

Guide mode

Installation guide mode

Edelrid GigaJul Sichern Tuber

Assisted braking guide mode

Giving slack in assisted braking guide mode

Edelrid Seil ausgeben Autotuber

Guide mode

Giving slack in guide mode

Edelrid Seil ausgeben Tuber

Assisted braking guide mode

Taking up slack in assisted braking guide mode

Edelrid Seil einholen Autotuber

Guide Mode

Taking up slack in guide mode

Edelrid Seil einholen Tuber


Bringing up seconds


Edelrid Sicherungsgerät Giga-Jul Nachsichern

Assisted braking guide mode

Lowering of the lead climber in assisted braking guide mode

Edelrid Ablassen Autotuber

Guide Mode

Lowering of the lead climber in guide mode

Edelrid Ablassen Tuber Modus
Edelrid Sicherungsgeräte GigaJul Tuber Autotuber

1. Belaying the first lead climber in assisted braking guide mode



2. Belaying from an anchor point in guide mode
3. Belaying the first lead climber in guide mode




Added safety! In principle, a so-called assisted braking tuber works exactly like normal tubular belay devices, even if the shape does not always suggest it.

These devices have a mechanism which, in the event of a fall, creates such strong friction that the rope can no longer run through. Therefore catching a fall is less dependent on the belayer's manual force. Assisted braking tubers offer significantly higher safety reserves than standard tubers. However, it is vital to always follow the manufacturer's instructions regarding the carabiners to be used and the permitted rope diameter. The extremely high braking performance can only be guaranteed if the correct rope diameter is used. The thicker the rope, the greater the friction generated and thus the effective braking of the rope. Nevertheless, the brake-side hand principle must of course also be adhered to when using an assisted braking tuber. It should be noted that due to the enormously high braking performance of the assisted braking tuber on the rope, a dynamic belaying technique should always be utilized. As suggested by the EN 15151-2 standard, our assisted braking tubers are also tested as manual braking devices. However, this is not mandatory and each manufacturer has its own policy on this issue.





of assisted braking guide mode

Very high safety reserves due to higher braking performance
Allows quickly giving slack
Less hand braking force required
Suitable for use with half ropes and twin ropes (depending on model)
Intuitive to use
Minimal kinks in rope


of assisted braking guide mode

Dynamic belaying only possible via body dynamics
Handling requires practice





According to the German Alpine Club (DAV), standard tubers are now by far the most used belay devices. All EDELRID tubular belay devices confrom to the stipulated values in the EN 15151-2 standard. Even today, standard tubers basically correspond to the original Sticht plate. Many climbers still talk about belay plates when using tubular devices. The braking performance works on the double-bend principle. The rope is thus bent twice: once around the carabiner and once downwards on the device. Friction increases the braking performance to the extent that a belayer can manually arrest a fall. However, in a tubular belay device the brake performance increase only works if the brake-side of the rope is held downwards and therefore the second bend is created. A misuse of the device can be extremely dangerous with drastic consequences. If the brake-side of the rope is released or held above or in front of the tuber, the belayer has hardly any chance of holding the rope in the event of a fall and can no longer prevent the lead climber from falling to the ground...
The big advantage of standard tubers is that they are dynamic. This means that a section of the rope is still running through the device until the fall is compeletely arrested. With a little practice, it is therefore possible to belay very dynamically with standard tubers.
This means if the lead climber falls, they will do so more softly. In addition, these devices allow quick paying out and quickly taking up slack.





of guide mode

Universal application (depending on model)—belaying a leader, bringing up a second, body belay
Optimal dynamic belaying
Perfect for abseiling with single and double ropes
Easy to use
Does not damage rope
Minimal kinks in rope


of guide mode

Does not block automatically (belaying error can have fatal consequences)
Certain devices have less braking performance/ require greater braking hand force
Braking performance affected by rope diameter—and condition