Swift Blocker 50 (Commercial)Introducing the biggest member of the Swift Blocker family the Commercial 50 Cell. With this blocker, you can effortlessly fill up a 1020 tray with 50 soil blocks, each measuring about 2 inches wide by 2 inches tall, in just minutes. Equipped with 3 4 tall and 1 2 wide threaded dibbles, it's designed to handle larger seeds, making it a perfect fit for veggie growers who want robust transplants.