What a great value! All the heavy lifting is done with metal parts and unlike the more economy units, the main head is metal. Another industry first is a base that is actually large enough to be stable WITHOUT having to screw it to a board or bench. In that regard, we'd say it's more appropriate to call this a one-handed capper. The last thing to say is that bottle height adjustments are made with a simple spring-loaded captured pin system. No tools or time required to adjust head height but it is also super stable.