Able to change from BTA to gundrill deep hole drilling tooling, UNI-50BTA can drill 0.31–2.56 in. dia holes at depth-to-diameter ratios of 100:1 or greater. Functionality allows drilling with either tooling method within diameter range in same part without secondary operations, and pressure head design enables tool change in as little as 10 min. Available in modular lengths, machine features high-accuracy feed and zero-endplay spindles, counter rotation, and preloaded ballscrew drives.