I would like to have such an adapter in combination with my PB Swiss Tools 1/4" bits and PB Swiss tools allan keys.
Included with the HX-One Essentials Kit is the proprietary SILCA 17-4 Stainless Magnetic Adapter. The Adapter with a pleasant magnetic click turns the 6mm Hex Key into a ¼” socket drive which can fit any common ¼” driver Bit.
And here is a picture of the SILCA 17-4 Stainless Magnetic Adapter: http://cdn.shopify.com/s/files/1/0309/9521/products/6mm_T25.jpg?v=1439919539