Indexable Thread Turning Tool Holder AS-20S-ADNEL-3 Cutting Direction Left Hand Shank Round Shank Height 1-3/4 in Shank Dia 1-1/4 in Overall Length 1-1/4 in Insert Shape TopNotch NG-3R Inscribed Circle 0.375 in Insert Thickness 0.195 in Width Offset 0.88 in Height Offset 1.75 in Mounting Style Dor-Lock Clamp JSLC-HP72 Clamp Screw JSCS-04