Acrow BT50-AK3-240 – AK Boring Shank Ø31mm, 240mm Carmex External Right Hand American Buttress Thread Turning Insert 10 TPI / 16 ER 10 ABUT BMA 8mm to 20mm square Acrow BSD31 – BSD Fine Boring Head (Ø32–42 mm Range) Versatile Use Functions as 402408002R

8mm to 20mm square

—a world leader in threading and grooving innovation—renowned for accuracy

while the built-in insect screen prevents pests from entering your ducting

Increased Accessibility – Fits standard ½″ chucks while enabling large hole drilling

quality control and precision machining

Acrow BT50 AK3 240 – AK Boring Shank Ø31mm, 240mm Carmex External Right Hand American Buttress Thread Turning Insert 10 TPI 16 ER 10 ABUT BMA 8mm to 20mm square Acrow BSD31 – BSD Fine Boring Head (Ø32–42 mm Range) Versatile Use Functions as 402408002R 8mm to 20mm square —a world leader in threading and grooving innovation—renowned for accuracy