The Omega Products VDI20 Collet Chuck, ER20 - Type E4, is a precision tool holder designed to securely grip ER20 tool shanks in milling and drilling applications. It provides reliable performance for a wide range of shops, from engineers and professionals to hobbyists, by delivering stable, accurate clamping and straightforward setup. Designed to work with ER collets, the Type E4 includes a precision nut that enables easy and quick collet changes while maintaining high clamping force and tight runout. This combination supports consistent cutting results across demanding tasks and is available in different sizes and tapers to fit various machine spindles and tool shanks. Precision nut for quick collet changes: Enables fast, repeatable collet swaps, reducing setup time and keeping tools properly aligned for dependable performance. High clamping force and runout accuracy: Delivers a secure grip with minimal runout, ensuring stable machining and consistent part finish under load. Versatile sizes and tapers for ER20 compatibility: Available in multiple sizes and tapers to fit a range of spindles and ER20 shanks, giving you flexible use across different machines. With durable construction and a secure ER20 grip, this Type E4 collet chuck helps you streamline workflows, minimize downtime, and achieve repeatable, high-quality results across diverse machining tasks. Its robust design and adaptable sizing make it a dependable centerpiece for everyday production and precision work alike.