... contact for details This package includes ;3 core drilling machines 20 core drill bits 1 extension barVacuum base and ... machine. Can also be used in both larger machines 25,28,32,44,50,76,83,102,120 ... ,150,180,202mm X 350mm long. 5. one extension bar for deeper ... connection , allen keys and spanner to maintain your machines. All the machines are of excellent quality. We keep a range ...