2. Pile hammer - There are different types of hammers used which are -
   1. Prop hammer
   
   
   2. Vibratory hammer
   
   
   3. Single action hammer
   
   
   4. Double action hammer
   
   
   5. Diesel hammer
   In India, drop hammers are widely used.


3. Helmet - It is assembly to avoid damage of the pile from hammer. Helmet consists of cushion, steel cap and dolley.


4. Follower - Follower is generally used when pile is out of reach of hammer. It is the extension, which transmits hammer blows to the piles.

Selection of pile hammers
The following pile hammers are more efficient than the drop hammers

1. Single acting steam or compressed air hammer