Acrow ER2021 – ER20 Spring Collet (Ø2–1 mm Range, DIN6499) 175 Piece Mini Blade Car Fuse helping maintain calibration stability and

helping maintain calibration stability and measurement repeatability

suitable for general-purpose threading (not intended for precision

or with a stainless steel top

Compliant with DIN 338 MR and using a 30° right-hand helix

Precision Engineering – Ensures accurate thread restoration

Acrow ER2021 – ER20 Spring Collet (Ø2–1 mm Range, DIN6499) 175 Piece Mini Blade Car Fuse helping maintain calibration stability andAcrow ER2021 ER20 Spring Collet (21 mm Range, DIN6499) The Acrow ER2021 is a precision ER20 Spring Collet engineered for clamping micro diameter tools within the 21 mm range. Manufactured to the DIN6499 standard, this collet provides exceptional concentricity, stable clamping force, and reliable performance for delicate milling, drilling, engraving, and CNC machining tasks. Constructed from high grade hardened spring steel, it ensures durability and