1. The multi-function electric drill conversion head can convert the electric drill into an electric circular saw , saving time and effort, and one machine has multiple uses.2. Efficient cutting, easy to carry, ready to use, one machine to multiple machines, all-round operation.3. The electric circular saw can adjust the angle and bevel,and the thoughtful design can easily cut out the ideal effect.4. The angle grinder can work efficiently, cutting, grinding, rust removal, polishing, etc.