... 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 ... for the general purpose drill. Ideal for indoor use on finished surfaces. Also saves time not having ... , allen keys and spanner to maintain your machines. All the machines are of excellent quality. We keep a range ...