Secure straight-shank cutting tools with an inclined clamping flat using Whistle Notch Arbors HSK Tool Holders. Precision-engineered for modern high-speed CNC milling centers and heavy-duty machining stations with DIN 69893 HSK spindle connections, these arbors feature an angled clamping screw that presses against the tool's Whistle Notch flat. This angled mechanism forces the cutting tool shank tightly backward against the internal axial length-adjustment screw, guaranteeing zero axial movement, precise tool length repeatability, and superior torque transmission during aggressive roughing and profiling operations.
