118 Schrock Drive, P.O. Box 307
Berlin PA 15530 
        FAX Telephone +1 (814) 267-6382 +1 (814) 267-7100

DFI Corporate Representatives:
Christen Fisher LP Sales Engineer +1 (814) 267-7100
Dave Pietrzykowski President / CEO +1 (814) 267-7100

Individual Corporate Members:
Tonya Conn Graphic Design/Marketing +1 (814) 267-7100
Brandon Fisher Founder / Customer Solutions +1 (814) 267-7100
James Rose International Construction Sales Representative +1 (814) 289-5907
Richard Soppe Senior Drilling Application Specialist +1 (814) 267-7100
Dave Stroh Sales Representative +1 (814) 267-7100

Services, Materials and/or Equipment offered:
Center Rock Inc. is a USA based manufacturer located in Berlin Pennsylvania. We serve the global drilling industry with specialty drilling products including but not limited to; downhole drills & bits from 3.5 up to 36 in diameter, LP canister drills from 24 up to 144, ROTO LOC under reamer systems for casing advancement, Wassara water hammers, hole openers, and many more. Center Rock prides itself in affording its customers the best value possible. Utilizing a consultative approach, we can satisfy your drilling product needs by designing and manufacturing a product for you in a matter of days not months.