Long Tool Life – Cobalt alloy construction ensures superior wear resistance under load
or with a stainless steel top
Precision Engineering – Ensures accurate thread restoration
Measurement Display: Viewing window shows metric
Each cutter end has been designed for external threading and the opposite end for internal threading
Acrow ER2021 – ER20 Spring Collet (Ø2–1 mm Range, DIN6499) 175 Piece Mini Blade Car Fuse Long Tool Life – CobaltAcrow 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