The Embedding Capsule Substitute, each

This 24 cavity mold produces a block similar to the embedding capsule block but with the following advantages: 

Resin polymerizes better in silicone rubber than in polypropylene or polyethylene - the rubber heats more evenly and retains the heat better than in plastic.
It is easier to see inside the well when centering the specimen in the tip.
It is easier to remove the block from the well. There is no need for razor blades or press devices.
The finished blocks have finer tips so when you trim deeper into the block the face doesn't increase in size rapidly; therefore, constant retrimming is not necessary.