Shackelford-Wattner, Texas Custom Builders, Ltd has been inspecting, repairing and replacing couplings for over 38 years and some employees have been with the company over 29 years. As of March, 2003 we are the Authorized Repair Center for Ameridrives International offering expedited inspection & repair service with factory support. We are able to respond to your coupling and coupling related needs 24-hours a day, 7 days a week. In the past 38 years our Houston facility has collected working drawings, specifications, and/or application information for thousands of Couplings usually categorized as "critical "or "high performance" used in connecting turbo machinery.