A non-powered component of a dental material heater designed to conduct heat from the heater’s heating element to a container holding a dental material/substance (e.g., composite resin, root canal cleaning solution, local anaesthetic agent). It is typically in the form of a metal block which incorporates holders of different shapes designed to accept specific devices/containers (e.g., vials, syringes, cartridges) for heating; it may include a cover. This is a reusable device.