One of them has a dent on top. This Craft Meister Alkaline Brewery Wash is perfect for those who are looking for a high-quality and reliable brewing solution. With a 5lb (80oz) capacity per container, this manual operation type wash is made of durable plastic material that ensures long-lasting use. Its unique features include a pH range of 8.5-9.5, which makes it ideal for brewing, distilling, and wine making. This product is made in Canada and is perfect for those who want to explore the world of brewing. With its brand quality and superior performance, this wash is a must-have for any home or professional brewing enthusiast.