This is designed for the Wera Kraftform Kompakt 27 RA 1 SB Ratcheting Screwdriver & Bits and will mount it onto the Skadis Holder.
Link the driver this is designed for - https://www.amazon.co.uk/dp/B004CJ8MDW?psc=1&ref=ppx_yo2ov_dt_b_product_details
The author marked this model as their own original creation.