1/2" Weldon End Mill Holder, CAT50, 4" Gage Length

For 1/2" Weldon-shank end mills, DIN 1835-B. CAT50 taper to ANSI B5.50, side-lock body to DIN 6359. Balanced to G2.5 at 15,000 RPM, runout within 0.005 mm. AD coolant through the flange, 1"-8 retention knob thread. Retention knob sold separately.