There are many pieces to a complete horizontal DTH hammer package. And the investment is not cost effective for many contractors. This has resulted in Bortech offering a rental program with technical assistance.  We has been building systems organically for over 25 years. We know that our DTH system offers the only viable method for difficult ground formations. We have extensive knowledge and experience on when and where to employ our technology. The selection of hammer size and bit type are important factors and must be matched to the casing size and ground formation.