Omega Products Castleated Collet Nuts for Collet Extensions are essential accessories for collet-based machining operations. They securely hold ER20 collet extensions in place, delivering stability and precision during milling, drilling, and other cutting tasks. The castleated profile enables easy tightening and loosening with a standard wrench, allowing quick, repeatable tool changes. Crafted from high-quality materials, these nuts resist wear and provide reliable performance in demanding workshop environments. Secure Retention for Collet Extensions: Keeps extensions locked and aligned to ensure a consistent tool path and repeatable results. Castleated Design for Quick Tool Changes: Tightens and loosens with a standard wrench, reducing downtime and speeding setup. Durable, Wear-Resistant Construction: Built from quality materials to withstand frequent use and maintain clamping force over time. By keeping the collet extension securely clamped, these nuts enhance alignment and cutting performance across jobs. The castleated design speeds tool changes, helping you meet tight production schedules without sacrificing precision. Designed for daily use in both professional shops and DIY setups, Omega's Castleated Collet Nut provides dependable, low-maintenance performance for ER20 tooling.