Sharktools 6 Piece Cat 40 End Mill Arbor Milling Set

• Constructed of alloy steel for long, durable service life.
• Balanced design for high-speed operation up to 15,000 RPM.
• Taper manufactured in accordance with ANSI B5.50 / ISO 7388 specifications.
• Hardened to Rc 56 – 60 for long service life.
• End mill arbor taper to bore runout less than 0.0002″”.
• Collet chuck taper to taper runout less than 0.0002″”.
• Shiny taper ground to AT3 accuracy (or better).
• Includes balancing certificate.
• Size Range: 1/4″ to 1″

Includes:
(6) CAT 40 End Mill Holders