Short description A precision-ground carbide grooving insert from the SIMTEK simturn DX system that cuts a complete round-bottom groove in one pass — R0.6 mm radius, 1.2 mm groove width, in bores from Ø8 mm. Right-hand (VR) version, supplied in grade X400. Insert only; the matching simturn DX toolholder is ordered separately. 1. At a Glance Model D08.0006.12 VR X400 Product type Indexable grooving insert — full-radius (round-bottom), internal System SIMTEK simturn DX