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 braiking guide mode

Taking up slack in assisted braiking 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



What is the assisted braking guide mode?

Extra safety. They might look rather different, but 'auto-locking' (or 'auto-blocking') tubular belay devices function in exactly the same way as normal tubular belay devices.

In the event of a fall, these belay devices produce so much friction that they prevent the rope from running through the device. Therefore holding a fall is less dependant on hand braking force. This means that tubular belay devices with assisted braking offer much higher safety reserves than standard tubular belay devices. However, you should always follow the manufacturer's instructions regarding which type of carabiner to use and the recommen- ded rope diameter. Tubular belay devices with assisted braking only guarantee their extremely high braking force if recommended rope diameters are used. As a general rule, the thicker the diameter, the greater the friction produced and the more the device blocks the rope. When using an auto-locking tubular belay device with assisted braking, the brake hand principle should always be adhered to. In addition, one should note that the very high braking force of these types of tubular devices means that dynamic belaying is only possible through body dynamics, i.e. by moving.





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




What is the guide mode?

Tubular belay devices are by far the most widely used type of belay device. All EDELRID tube belay devices comply with the safety requirements of the European standard 15151-2. They are in essence a modern version of the original Sticht plate. This is why many climbers still refer to them as a 'belay plate'. They create braking force through a double bend in the rope. The rope is bent around the HMS carabiner and around the device itself. The resulting friction increases the braking force sufficiently to be able to hold a fall by hand. However, a tube belay device's increased braking force only functions if the dead rope is held down by the brake hand below the device to produce a further bend. Incorrect use can be very dangerous and have drastic consequences. If the braking hand lets go of the rope, or if the braking rope is held above the belay device, in the event of a fall the belayer will have virtually no chance of holding the rope and will no longer be able to prevent a ground fall...

The main advantage of tubular belay devices is their dynamic braking action. They allow a small amount of rope to pass through the device before a fall is completely arrested. So with a little practice, tubular belay devices allow you to belay very dynamically. This softens the climber's fall. In addition, tubular belay devices allow you to give slack and to take up slack quickly and easily.





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