You cannot add "WP/DGT/SGT 9/17/18/20/26/125M/250M/225F, 13N12, Standard Ceramic Cup, 12.5MM DIA (No.8)" to the basket because the product is out of stock.
WP/DGT/SGT 9/20/125M/250M/225F, 53N59, Gas Lens Cup, 8MM DIA (No.5)
£1.90
WP Gas Lens Cup, 53N59, 8MM Dia for WP/DGT/SGT 9/17/18/20/24W/26/125M/250M/225F