BL3 HARD STEEL MANDREL and reliable operation—making it a

and reliable operation—making it a trusted choice for production and repair environments alike

and superior alignment—ensuring accurate

mounting bracket and instructions

the BL6 delivers reliable

steel alloys

BL3 HARD STEEL MANDREL and reliable operation—making it aThe Sunnen BL3 Mandrel is designed for accurate, fine honing of small diameter bores where tight tolerances and superior surface finish are critical. Durable and easy to set up, it ensures consistent, repeatable results for a variety of applications. Compatible with Sunnen honing systems, the BL3 is ideal for precision work in automotive, aerospace, and manufacturing industries.