Acrow BSD Insert Holder Extension – B.BSD39-100 (Ø61–74 mm) ER40 Milling Chuck Arbor Collet Nut with C spanner Straight Flute Design – Ensures

Straight Flute Design – Ensures accurate alignment and superior surface finish in through and blind holes

repeatable measurements across a wide range of applications

Consistent dimensional precision for clean

and a superior surface finish across multiple materials

Acrow BSD Insert Holder Extension – B.BSD39-100 (Ø61–74 mm) ER40 Milling Chuck Arbor Collet Nut with C spanner Straight Flute Design – EnsuresAcrow BSD Insert Holder Extension B. BSD39 100 The Acrow B. BSD39 100 Insert Holder Extension is a precision engineered accessory developed to extend the boring capacity of Acrow BSD39 boring heads. Manufactured from hardened alloy steel and precision ground to exacting tolerances, it ensures superior rigidity, balance, and accuracy for deep boring and finishing applications. The B. BSD39 100 is ideal for both standard and back boring operations,