1. Automation
2. X-Y moves over donor and recipient blocks, carousel rotation for changing recipient blocks when making copies and rotation of the punches while extracting cores

3. coaxial punches where donor punch, recipient punch and stylet are concentric
4. Ergonomics- simple 1/4 turn with an easy to handle selector is enough to automatically adjust punches
5. 8-position carousel
6. Easy & simple

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