Home DDI Corporate Video 2016 5 1/2″ Sherman, TX 18″ H-O Louisville, KY 12 1/4″ H-O Germany 6 3/4″ D-B Columbus, OH 18″ H-O Prospect, PA DDI 2014 UCT Expo Houston 5 5/8″ D-B Logan, UT 12 1/4″ D-B Hobbs, NM 20” H-O Sherman TX H-O Switzerland HD 20″ H-O Fort Worth, TX 6 3/4″ D-B Germany 4 1/2″ D-B Lexington, KY 2014 DDI Customer Testimonial DDI 2013 ICUEE Expo 5 1/2″ D-B Richardson, TX 12 1/4″ H-O Ft.Worth, TX Quality Test DDI Drilling Handbook 18″ H-O Jal, New Mexico 9 7/8″ Cyclone Bit, Odessa, TX 3 7/8″ D-B Toronto, ON DDI 2014 NGWA Expo Las Vegas DDI Corporate Video 30″ H-O Perry, OK 12 1/4″ H-O Brentwood, CA Take a look at what sets us apart! 16″ H-O 45 min. south of Big Springs 20″ H-O Albany, NY 12 1/4″ D-B Topeka, KS 2015 UCT Display in Houston DDI Repair Video 5″ D-B Ottumwa, IA 20″ H-O Hamilton, TX