Kays Engineering has purchased TechniDrill. Learn More Menu Deep Hole Drilling Machines Manufacturer of Eldorado, DeHoff, and TechniDrill Precision machine tools : Made in America since 1948 All of our DeHoff, Eldorado, and TechniDrill machines are designed and manufactured in our 50,000 square foot facility in Marshall, Missouri, USA. Our meticulous attention to detail during the build process ensures that each machine leaving our plant will deliver superior performance for decades to come. We take great pride in the excellent reputation our products have earned over the last half-century. Kays Engineering’s dedicated and experienced employees work hard every day to maintain that reputation and continuously earn our customers’ trust. : Drilling diameters from 0.039 – 0.75 inches Gundrilling machines designed for applications in job shops and the medical industry. Made in the USA since 1948. View the Eldorado product line : Drilling diameters from 0.75 – 2.0 inches Gundrilling and BTA/STS machines designed for applications in the automotive, aerospace, and firearms industries. Made in the USA since 1956. View the DeHoff product line : Drilling diameters from 2 – 10 inches Gundrilling and BTA/STS machines designed for applications in the aerospace and petroleum industries. Made in the USA since 1984. View the TechniDrill product line We're here to help you: Call (660) 886 9929 Email us Visit us at: Kays Engineering manufactures DeHoff, Eldorado, and TechniDrill gundrilling and BTA/STS drilling machines. All machines are designed and manufactured in the USA. © 2021 Kays Engineering, Inc., 900 Industrial Drive, Marshall, MO 65340 Site by Huff Industrial Marketing, Inc.