Crankbrothers presents Slider Tire Lever
If there is an essential tool for any cyclist, it is tire levers. But Crankbrothers knows that mounting a tire is not always an easy task, so they have complemented them with 2 easy-close clamps that will provide support in this task.

New Crankbrothers tire levers are sliders
With this new Crankbrothers tire lever kit, they meet the basic requirements that this tool must have, they have to be rigid, resistant, and compact. But they also add two clamp-shaped pieces that they call sliders.

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With them, mounting a tire is a bit easier since the sliders work as an easy-close clamp that is placed on the edge of the rim and keeps the tire inside once inserted, so we only have to worry about the final lever to finish inserting it.
I'm sure there are many people for whom this is not necessary and are more than used to putting on and taking off tires with their own hands, but for those of us who start sweating just thinking about getting to work, it is a real advantage.
Its price of 9.99€ seems like a great deal for a tool like this.