In the era of the fourth industrial revolution, technological frameworks aim to arrange information and communication technologies into valuable assets to support the management of operations. One of these frameworks is the digital twin, which enables abstractions of a physical resource in the virtual space, allowing for behavior simulations and performance assessments. Consensus regarding which key features manufacturing digital twins should encompass has not yet been reached. This study summarizes a variety of features proposed by recent models in the literature. Four features are identified, followed by expert analyses that assess how valuable they are to the success of implementations.