Dipper arm on a digger are out of standard arms. In recent years, the speed of replacement is very fast. On the basis of the standard arm, several modified dipper arm on a digger are designed:

1. Long Reach Boom：suitable for long-distance construction

2. High Reach Arm Demolition：suitable for long-distance demolition

3. Piling Boom and Arm：used for positioning pile driving

4. Telescopic Arm：used for deep excavation operations

5. Rock Boom：used for mining area crushing

6. Traditional Digger Rock Boom：used for mining area crushing

7. Short Boom：used for excavation in small spaces