Acrow BT40-AK4-145 – AK Boring Shank Ø39mm, 145mm Carmex Internal Threading Kit – KIG NT30 - ER40 - 70

NT30 - ER40 - 70 Collet Chuck

Why Choose the Somta Series 508 M30 x 3

120 mm Bench Machining Vice

ensuring strong and accurate threads in a variety of materials

Acrow BT40-AK4-145 – AK Boring Shank Ø39mm, 145mm Carmex Internal Threading Kit – KIG NT30 - ER40 - 70Acrow BT40 AK4 145 AK Modular Boring Shank (39 mm, 145 mm Length) The Acrow BT40 AK4 145 is a medium length AK Modular Boring Shank designed for use with AK4 boring heads. With a 145 mm gauge length and 39 mm body diameter, this arbor offers an excellent balance of rigidity and reach, ensuring precise boring with stable cutting performance. Its precision ground surface and hardened alloy construction deliver high accuracy and long service life.