Sharktools 3/8″ CAT 40 Taper End Mill Holder, 3″ Projection – ST40EM038300B

• Balanced to G6.3 at 15,000 RPM to save spindle bearing life
• Taper-to-bore runout <0.0004".
• Bore tolerance: H6
• AD coolant thru the spindle.
• Taper shank ground to AT3 accuracy (or better).
• Taper manufactured in accordance with ANSI B5.50 / ISO 7388 specifications.
• CAT 40 Draw bar threads: 5/8″-11

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