✨ Get 5% off 6+ Tool holders Automatic CAT40 taper Length: 100mm (3.94") Tool Diameter Range: .039 - .512" (1-13mm) Body Diameter: 1.89" (48mm) Pull stud thread: Balanced to G2.5 at 25,000 RPM 0.0002" precision Works with standard CAT40 spindles Does not come with pull stud Use APU13 wrench to tighten