W120.G3 is the new and improved 5" hammer. It is more powerful and is designed to provide a higher ROP compared to the standard W120 due to a heavier piston, especially in softer formations. Together with the integrated check valve this becomes a very good hammer.
The Wassara technology uses water to power the DTH hammer. This makes it the ideal choice for drilling in sensitive areas as well as for drilling long straight holes. The water-powered hammer is capable of penetrating almost any formation while maintaining speed and accuracy.