* Constructed of alloy steel for long, durable service life. * Hardened to RC 56-60 for long service life.* * Shiny taper with black oxide finish for the best combination of accuracy and durability. * Shell mill pilot T.I.R. ≤.0002". * Parsymmetry™ design for high-speed operation. * Plastic bumper protects spindle and holder during tool changes. Available on NMTB 40 and 50 holders only. * HSK Shell Mill Holders are through-hardened to RC 48-52. __Lock screw and/or sockethead cap screw are included. Refer to Screws and Drive Keys for more information.__ 2007-01-17T12:17:21+00:00 false false 22 true false Constructed of alloy steel for long, durable service life. Hardened to RC 56-60 for long service life.* Shiny taper with black oxide finish for the best combination of accuracy and durability. Shell mill pilot T.I.R. ≤.0002”. Parsymmetry&tra Shell Mill Holders, Milling Holders, Toolholding, Products, HSK Shell Mill H100-20SM2 shown here. All shell milling holders meet or exceed appropriate standards. See Technical for specifications., Order Retention Knob separately., Lock screw and/or socket Shell Mill Holders 356 13 false shell_mill_holders 2007-06-26T18:08:05+00:00 true