The Omega DV40 End Mill Holder (Form AD/B) is a precision toolholder designed to securely grip end mills with a 6 mm bore, offering a 160 mm gauge length for stable tool positioning. This holder is ideal for engineers, machinists, tradespeople, hobbyists, and anyone needing reliable performance across a variety of milling tasks. With a speed range of 15,000 to 25,000 RPM and balance grades G2.5/G6.3, it delivers smooth, stable rotation that minimizes vibration and maximizes cutting performance. The precise construction and reliable clamping mechanism guarantee a secure grip on the end mill, preventing slippage and preserving accuracy during both roughing and finishing operations. Secure Clamping for Accurate Milling: The precise construction and reliable clamping guarantee a secure grip on the end mill, preventing slippage and preserving accuracy during machining. High-Speed, Low-Vibration Operation: A speed range of 15,000–25,000 RPM with balance grades G2.5/G6.3 delivers smooth, stable rotation that minimizes vibrations and maximizes cutting performance. Versatile End-Mill Compatibility: Designed to accommodate end mills across a range of diameters and shank sizes, with a 160 mm gauge length to support both roughing and finishing tasks. This holder helps streamline workflows by delivering secure tool retention, consistent results, and reliable performance across milling applications—from roughing through finishing—without compromise.