GROOVING / CUTTING OFF ── ──── INTERNAL Min. Cutting Cutting Width Max. Groove Name of Tool Holder Insert Shape Features Diameter Depth (inch) (inch) (inch) GY Series Modular type .079" (2.0 mm)a Clamp-on type.a High accuracy and rigidity dueto the modular blade..088".094".098" (2.5 mm).108" (Tri-lock system) .118" (3.0 mm) a Various insert types.Mono block typea Spring clamp type..125".984".128".157"(25 mm).157" (4.0 mm).167".512" .187" .197" (5.0 mm) .206" .236" (6.0 mm) .248" ^ F170 .250" FSL5/S-SL5 a Screw-on type. .047" (1.2 mm)a Precision class insert..059" (1.5 mm) Boring Bars a Holder is capable of performingboth grooving and threading.a Maximum groove depth .118 inch..394".062".079" (2.0 mm).094".118" (3.0 mm).039".118"F .125" .156" ^ F238 .157" (4.0 mm) MICRO-MINI TWIN a Solid carbide type. Boring Bars a Economical due to single holderwith two cutting edges. .04" .04" ─ .118" .08" .08" ^ F241 MICRO-MINI a Solid carbide type. Boring Bars a Insert can be ground to suit theapplication. .08" .04" ─ .126" .12" .08" ^ E031 F003