Standard ER20 Collets

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Standard Precision ER20 Collet for CNC SpindlesReliable, affordable tool holding for everyday CNC work. Our standard-precision ER20 collets are a dependable choice for woodworking, routing, and general CNC applications. Designed to provide solid clamping force and consistent performance, they are ideal for spindle setups and ATC systems that use ER20 tooling. With ±0.0004" (±0.01mm) runout, these collets offer excellent accuracy for most woodworking and routing tasks while keeping costs practical for day-to-day use. Key Features Standard precision for general CNC applications ±0.0004" (±0.01mm) runout Compatible with ER20 spindle systems Suitable for manual tool changes and ATC setups Great for woodworking, carving, and router-based projects Best Practices Always match the collet size to your tool shank Keep the collet and nut clean for best performance Replace worn collets as needed Do not overtighten Note: For tighter tolerances and lower runout, check out our High-Precision ER20 Collets. Show more