Omega Products Back Stop Screws are essential accessories engineered for ER collet chucks, designed to provide reliable support and precise positioning for your workpieces. Sized for M11x1 threading, these screws help you achieve consistent machining results across setups. Built from durable materials with precision threads and a secure locking mechanism, the back stop screws maintain accurate stops under repetitive use. The ergonomic design makes adjustment quick and straightforward, helping you lock in setups fast and keep production moving. Precise threads and secure lock: Ensures tight, repeatable back stops with minimal backlash, reducing setup time and part-to-part variation. Durable, wear-resistant construction: Built from high-quality materials to withstand daily machining, delivering long service life and dependable performance. Ergonomic, fast-adjust design: Smooth, intuitive adjustment and quick locking to minimize downtime and keep workflows flowing. With the Omega Back Stop Screw in place, you gain stable workholding and repeatable positioning that translates into tighter tolerances and higher-quality parts. The combination of durable construction, precise threads, and a secure lock reduces downtime, speeds up setup, and helps maintain consistent results across milling, drilling, and turning operations. Trustworthy design and straightforward operation give you confidence to push for better productivity in busy workshops.