Mini-stub bit holder with ¼" square drive for all standard ¼" plug-in adapters. The deep square reduces the total height to the smallest dimension possible. This means that for the first time screw connections in very tight spaces can now be easily loosened or hand-tightened. The large lateral gaps allow very good access to the attachments and their convenient replacement. Ideal for screw hose clamps, interior linings, wheel houses, in short in all tight spaces. The stub bit holder belongs in every tool kit.