BL4 SOFT STEEL MANDREL the CF2 ensures superior bore

the CF2 ensures superior bore geometry

The Sunnen BL5 Mandrel is engineered to deliver exceptional accuracy and surface finish for small to mid-sized bore honing applications

engineered for high-precision applications requiring consistent abrasive alignment and efficient material removal

Maximize honing performance with Sunnen D6 Tooling—engineered for precision

engineered for efficient stock removal and superior surface finishes

BL4 SOFT STEEL MANDREL the CF2 ensures superior boreThe Sunnen BL4 Mandrel offers dependable performance for honing small to medium sized bores with exceptional accuracy and surface finish. Engineered for durability and ease of use, it delivers consistent, repeatable results across a variety of materials and applications. Fully compatible with Sunnen honing systems, the BL4 is the trusted choice for shops demanding precision and efficiency.