GBL Heavy Duty Castor Wheels + Screws - 25mm M8 x 20mm up to 40kg - 4pcs No Floor Marks Silent Caster for Furniture - Small Rubberized Trolley Wheels - Silver Casters :
Premium Castor Wheel With Square Embellisher Cup 32mm Brass, Antique & Chrome, Screw Fitting Replacement Castor - Etsy UK
HOLKIE Castor Wheels 75mm with Brakes Stem Castors Set of 4 Heavy Duty, M10 x 1.5 x 30mm (Stem Diameter 10mm, Stem Length 30mm) Threaded Stem Caster ...
Twin Castor Wheel Nylon 40mm DIameter 8mm Swivel – Fixaball Ltd. Fixings and Fasteners UK
The 5 Types of Castor Wheel Fixings - Bulldog Castors Blog