My first self-development: These small hooks help you to get into the cockpit and give you more grip. Just sit on it, hook it in and start shooting.
Because you build up a slight tension with your index, middle, ring or little finger, you sit more compactly - and at the same time more calmly. And you always have a reminder to keep it that way and not soften the aero position when nobody is looking. Or you just get tired.
You can use the resistance in both directions, and there is a slight depression for the front and back. The distance from the cockpit to the saddle can always be kept in view. In case you, like me, like to hike further forward when you are under higher loads - or make yourself really small and long on high-speed descents.
The attachment is very easy, regardless of whether you switch mechanically or with cables. There is a channel on the inside for both. The hooks are simply attached with adhesive tape, preferably with duct tape, at the end of the extension in front of the shifters and then I always put a layer of grip tape over it for the final hold of the hook and my hand. The highlight of this tape instead of classic handlebar tape or neoprene covers: as the name suggests, it simply has more grip, even when wet. Of course, the grappling hooks also work with normal handlebar tape or under neoprene covers, as are sometimes installed on Canyon's Speedmax models.
Scope of delivery: two grappling hooks and two pieces of plain black grip tape for the usual 22.2 millimeter extension tube. Depending on the size and type of switch, you have to trim something with scissors or a cutter. As a guide, the following circumferences: a bare 22.2 millimeter tube has a circumference of 7 cm, an external Di2 cable has a circumference of 7.5 cm and mechanical shifting and then a circumference of 9 cm directly on the front hook. Or you can buy the new version 2.0 for internal lines here and now.
Made in Germany!