Maximum torque: 80N. 1"/25mm Stainless Steel 90 Degree Tube Marine Boat Yacht Rail Stanchion Base. For Milwaukee 18V Battery. Compatible with Milwaukee 18V lithium-ion batteries such as 48-11-1812, 48-11-1815, 48-11-1820, 48-11-1828, 48-11-1835.
eBay