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The Emery eights are interesting articulated eight. I don't see why the articulation is needed. The Kong De-Jump and the Frendo eights were made for canyoneering, and I can see that they would be quite useful in that situation, where dropping one’s rappel device is both easy and inconvenient. The Young Manufacturing Rescue Safe Eights are well-made devices that provide an innovative alternative to the Figure Eights With Ears, addressing something that I don't view as a problem in my world, but apparently concerns many people in theirs.
The weight chart shows that the complex eights are heavier than the average standard eight, but much lighter than many other eights.
| Image | ID | Device | Description | Acquired | Weight | Height | Width | Thickness | Standard volume |
|---|---|---|---|---|---|---|---|---|---|
 |
358 1241 2428 |
Emery Magic 31700 | Forged, painted, wire safety, rectangular holes, ears |
|
198 | 148 | 75 | 78 | 866 |
 |
359 2429 |
Emery Pratic 31701 | Forged, painted, wire safety, rectangular holes |
|
180 | 148 | 75 | 55 | 611 |
 |
538 | Frendo, Version A |
Forged, soft anodized, wire clip, round holes | Alpinist & Globetrotter, 1997 | 162 | 158 | 71 | 58 | 651 |
 |
539 | Frendo, Version B | Forged, painted, wire clip, round holes | Comptoir des Techniques Verticales, 1997 | 163 | 158 | 71 | 58 | 651 |
 |
990 | Kong De-Jump | Forged, soft anodized, spring-loaded throat, trapezoidal rope hole | Barrabes.com, 2005 | 326 | 140 | 105 | 23 | 333 |
 |
3165 | Orion-Alp (Орион-Альп) Sports Eight (Восьмерка Спортивная "Орион-Альп") | Milled steel, painted, for attachment to a carabiner. | Orion-Alp (Орион-Альп) via Artyom Babin (Артём Бабин), 2022 | 188 (excluding carabiner) |
167 | 114 | 22 | 408 |
 |
3166 | Vertical (Вертикаль) Sport-Tourism Eight (Спусковое устройство восьмерка с креплением "Спорт-туризм" ) | Milled steel, painted, for attachment to a carabiner. | Vertical (Вертикаль) via Artyom Babin (Артём Бабин), 2022 | 153 (excluding carabiner) |
133 | 96 | 30 | 385 |
 |
976 | Young Manufacturing Rescue Safe 8, Large | Milled, hard anodized, milled safety clip, irregular rope hole, oval eye | Young Manufacturing, 2004 | 204 | 161 | 92 | 32 | 478 |
 |
977 | Young Manufacturing Rescue Safe 8, Small | Milled, hard anodized, milled safety clip, irregular rope hole, oval eye | Young Manufacturing, 2004 | 181 | 148 | 76 | 33 | 367 |
