Kitchen Supply Set of Four 6-Ounce Glass Custard Cups Withe Snap On Lids for $6.69. Shipping is free on orders over $25. If needed, use this Filler Tool to qualify for free shipping. Here is a screenshot for your reference. This ovenproof custard cup measures 4″ x 4″ x 8.5″ and is dishwasher and microwave safe.