Add to Cart Quick view Techniks 6133290 CAT40 Modular Boring Tool Holder - Pinzbohr Adapter - 42mm Head MSRP: $494.00 Now: $454.48 Was: The Techniks 6133290 is a CAT40 modular boring tool holder designed to integrate with the Pinzbohr modular boring system for superior rigidity an 6133290