Product details:

Techniks 22915-2.5 | CAT40 X 3/8" Diameter x 2.5" End Mill Holder- Techniks End Mill Holders are precision machined to an Industry Leading H5 standard I.D. hole tolerance. Techniks End Mills are balanced to 15,000 RPM at G6.3 tolerance to save spindle bearing life and the Taper is ground to AT3 standard for maximum spindle contact. Each holder is lab certified with an individual report to ensure quality.Product Specifications UNSPSC Code 27112809 Nose Diameter (in) 1 Nose Diameter (mm) 25.4 Bore I.D. (in) 0.375 Bore I.D. (mm) 9.5 Taper Type CAT40 Material 8620 Steel Type End Mill Holder Style Single End Gage Length (in) 2.5 Gage Length (mm) 63.5 Overall Length (in) 5.19 Overall Length (mm) 131.7 Warning: This product can expose you to materials and/or chemicals including arsenic, lead, and other materials and/or chemicals which are known to the state of California to cause cancer and/or reproductive harm.