20 Pack. BZP Heavy Duty Washers. Ideal as Sewing Pattern Weights as seen on The BBC's 'Great British Sewing Bee'. Zinc Plated 12mm Internal Hole

20 Pack. BZP Heavy Duty Washers. Ideal as Sewing Pattern Weights as seen on the BBC's 'Great British Sewing Bee' 12mm Internal Hole Diameter x 50mm External Diameter x 5.0mm Thickness. PLEASE NOTE: Images show the style of fastener or fixing and not necessarily its exact shape or dimensions. NOTE: hole is 12mm, Outside Diameter 50mm and 5mm thick