Acrow ER4034 – ER40 Spring Collet (Ø4–3 mm Range, DIN6499) Precision Type) it delivers robust cutting stability

it delivers robust cutting stability and accuracy for large-diameter threading applications

you can efficiently restore threads with minimal downtime

Tooth Profile: Parallel Flutes

Designed for full-form threading

and clean cutting action across a wide range of materials

Acrow ER4034 – ER40 Spring Collet (Ø4–3 mm Range, DIN6499) Precision Type) it delivers robust cutting stabilityAcrow ER4034 ER40 Spring Collet (43 mm Range, DIN6499) The Acrow ER4034 is a high precision ER40 Spring Collet specially designed for clamping small diameter tools within the 43 mm range. Manufactured to the DIN6499 specification, it offers excellent concentricity, strong clamping pressure, and stable performance. Constructed from premium hardened spring steel, this collet ensures long service life and accuracy in CNC milling, drilling, engraving, and