The Omega Products ER Collet Extension with Castle Nut (UM) and Straight Shank adds 150 mm of reach to your ER20 collet system. Built for reliability in the shop, this extension uses a castle nut to provide a secure, adjustable connection between the extension and the collet, while the straight shank fits a wide range of tool holders and fixturing.

Whether you're machining long workpieces, reaching into tight tool paths, or simply needing more flexibility in your setups, this extension helps you maintain accurate, stable gripping and reduces the need for rework.

• Secure Castle Nut Connection: Castle nut design locks the extension onto the collet with adjustable tightening, ensuring a steady grip on long or irregular parts and enabling quick clamp adjustments when changing setups.
• Straight Shank for Easy Setup: The straight shank slides directly into standard tool holders and milling setups, simplifying mounting and reducing misalignment for reliable performance.
• Durable, Precision-Ready Construction: Built to endure demanding workshop use, it maintains tight tolerances and concentricity for repeatable, true machining results.

With this ER collet extension, you expand your machining capabilities without compromising accuracy or stability. The secure castle nut, easy-to-use straight shank, and rugged construction work together to streamline setups, reduce downtime, and deliver consistent results on longer parts and more complex geometries across ER20 applications.