The S version of Birzman's Y-Wrench has a sleeve on each tool that can rotate, so you can more easily screw in the bolt.

So you can keep your fingers on the sleeve and turn the bolt around at the same time.

The tool has 3 different sizes; 2 / 2.5 / 3 mm Allen key.

The tool has a magnet in the middle so you can easily hang it on a tool board, work stand, or other metal surfaces.