Petzl took the most used assisted braking belay device on the planet, made it 25% smaller and 20% lighter, gave it a wider functional range, and called it the Grigri 2. Unlike the previous model, the Grigri 2 works on ropes clear down to 8. 9mm because, let's face it, we've all used the last model well outside its recommended specs. In addition, the new release system uses a graduated cam, which gives you better control while lowering your climber. Since Petzl knows that you'll be using this belay device for a decade or more, it made the cam out of burly stainless steel for a seriously long life.