BAHCO 9500SM-71 - 1" Square Drive Socket with 71 mm Hex Profile - Red Box Tools
RS PRO 1/2 in, 1/4 in, 3/8 in Square Adapter | RS
1/4" Square Drive Sockets - A/F | Zoro UK
Six Point 1" Square Drive Imperial Long - Deltec Industries
1" Square Drive Impact Sockets
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
Steltools.co.uk Supplier Of OEM Spares, Official Karcher Dealer, Karcher Spares, Karcher Consumables, Official Unilite Dealer, Insulated Tools, Jerry Cans And Much More SOCKET, IMPACT, BI-SQUARE, 1-1/8" X 1" DRIVE, AS CHAIR SCREW