Atlantic Millhouse Brass Harrison Solid Brass Knurled Mortice Knob On Concealed Fix Rose, Antique Brass - MH450KSMKAB (sold in pairs) from Door Handle Company
Knurled Drawer Knobs in Luxury Satin Brass Finish - Handle King UK
Carlisle Brass FTD702 Cylindrical Knurled Knob 18mm - Various Finishes