Achieve high-precision tool positioning and secure shank clamping with Whistle Notch Arbors SK Taper Tool Holders. Specifically designed for CNC milling machines and machining centers equipped with DIN 69871 (SK) steep taper spindles, these tool holders feature an inclined clamping screw mechanism. When tightened against the angled flat (whistle notch) of the tool shank, the clamping screw exerts both radial holding force and axial backward pressure, pulling the cutting tool tight against the internal mechanical stop for exceptional depth consistency and zero axial movement during heavy cutting operations.
