Converter Socket Silver Sleeve Square Drive To 1/4 Inch Replacement Set | eBay
RS PRO 1/2 in, 1/4 in, 3/8 in Square Adapter | RS
Socket adaptor set 30409 - converts 1/4" hex shank to 1/4",3/8" and 1/2" square socket drivers and extends to 150mm long - Rolson Tools
Impact Driver Socket Adapter Set with Magnetic Extension Bit Holder for 1/4 inch Hex Shank to Square Socket Turn Power Drill Into Nut Driver 4 Pieces : Amazon.co.uk: DIY & Tools