Indexable Thread Turning Tool Holder ADNSR12-3B Cutting Direction Right Hand Shank Square Shank Width 3/4 in Shank Height 3/4 in Overall Length 4-1/2 in Insert Shape TopNotch NG-3R Inscribed Circle 0.375 in Insert Thickness 0.195 in Width Offset 1 in Mounting Style Dor-Lock Clamp JSLC-HP72 Clamp Screw JSCS-04