How to use Mega Jul and Micro Jul, safety, lifespan, storage and care with instructional pictures.
Micro Jul
Description
A compact, ultra-light belay and abseil device for half ropes and twin ropes. The only suitable device for use with the Flycatcher 6.9 mm.
For belaying a leader or bringing up 2 seconds, also suitable for abseiling
Robust solid stainless steel construction
Very lightweight construction
High braking performance assists the belayer with leader falls
Small eyelet for releasing unit with a carabiner when bringing up your partner
Rope can be paid out faster to a leader by holding device in the “open” position with the thumb
A compact, ultra-light belay and abseil device for half ropes and twin ropes. The only suitable device for use with the Flycatcher 6.9 mm.
For belaying a leader or bringing up 2 seconds, also suitable for abseiling
Robust solid stainless steel construction
Very lightweight construction
High braking performance assists the belayer with leader falls
Small eyelet for releasing unit with a carabiner when bringing up your partner
Rope can be paid out faster to a leader by...
Retail price
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Device Type![]() ![]() |
Brake Assist - Tube |
Weight (g)![]() ![]() |
62 g |
Belay Brake Assist![]() ![]() |
Yes |
Rope Options | 1 or 2 ropes |
Guide Mode![]() ![]() |
Up to 2 followers |
Teeth![]() ![]() |
No |
Rope Range (mm)![]() ![]() | 6.9 mm
- 8.9 mm
single 8.0 - 8.9 mm, double 7.9 - 8.9 mm, twin 6.9 - 8.0 mm |
Certification![]() ![]() |
|
Previously this device had different rope ranges listed (and you'll hear different rope ranges on Edelrid's and WeighMyRack's videos about this product). The rope ranges written previously were safe to use, but these more recent numbers will ensure better handling.
No reviews yet.

The Micro Jul was designed to accompany their groundbreaking Flycatcher rope, the thinnest half rope on the market at 6.9mm. The problem was the Flycatcher was so skinny there wasn’t a single belay device rated to handle a rope that thin. After designing the Micro Jul specifically for skinny ropes, they realized that the belay device had so many helpful features it was worth making another one that could handle “standard” rope diameters. Thus, the Mega Jul was born, identical in functionality to the Micro Jul, differing only in what rope diameters it is designed to handle [Micro Jul: 6.9mm-8.5mm Mega Jul: 7.8mm-10.5mm].

So, given my views regarding the Alpine Up’s performance, It would seem as though it would replace my other belay devices. However, even though it’s the best performer, there are times when I still prefer the Edelrid Mega Jul or Micro Jul.
The Mega Jul and Micro Jul are significantly lighter and more compact, so when weight and space are at a premium (i.e. alpine climbing) I will usually reach for one of the Edelrid devices over the Alpine Up. Also, the Micro Jul is the only device capable of being used with really skinny twin ropes, such as the 6.9mm Edelrid Flycatcher.
Bottom line is that when I’m cragging, I generally take the Alpine Up. When I’m alpine climbing, I generally take the Mega Jul or Micro Jul.
This video shows Daniel Gebel explaining all the features of Mega Jul and Micro Jul belay device.
Video shows how it works.
This video shows detail instruction of using Micro Jul and Mega Jul
How to use Mega Jul and Micro Jul, safety, lifespan, storage and care with instructional pictures.