This type is also one of the most frequently used Leader type for BRUCE Hammer mounting on the Leader for the purpose of driving into a more difficult to set up.
This type of Leader is more accurately advanced method for pile driving and more sophisticated Leader type than a Fixed Leader Type in terms of the Hammer is interlocking inside the Leader to slide or to stick to it accommodating a more precise pile driving and a greater battered piling work by the Crane lifts a whole structure of Leader.