Pastry round cutters are used primarily for cutting pastry, cookies, puff pastry, biscuits, and tea sandwiches. They can also be used as a form for food. For example, in forming a crab cake or steak tartare.
Pastry round cutters are typically sold in sets of 6 to 12 cutters. The set often includes a case to keep the cutters organized and clean. The better cutters are made of stainless steel which is more durable and cuts better than their plastic counterparts.
The CIA Masters Collection 11 Piece Round Cutter Set is shown at the top of this page. This set is made of professional gauge 18/8 stainless steel and has a sharp edge for cutting and a rounded edge to protect your fingers. It's dishwasher safe and comes with a lifetime warranty. There are 11 graduated sizes ranging from 7/8 inch to 3-5/8 inch, and it comes with a durable plastic case with a locking top for easy and compact storage. It's perfect for cutting bases for cookies, roles, puff pastry, biscuits and tea sandwiches.
In the same price range is the Ateco 11 Piece Plain Round Cutter Set. This cookie cutter set is also made of stainless steel with sizes ranging from 3/4 inch to 3-5/8 inch diameter. They have rolled edges on the top to protect fingers during cutting and they are all dishwasher safe. They come in a tin storage box and are perfect for cutting pastry, cookies, dough, or as a form for food.
Both of these pastry round cutter sets have been highly rated by users on Amazon, so we're confident that either would meet your needs for cutting cylindrical food or making short towers.