SNGR Inner Groove / Hole Indexable Lathe Turning Tool Holder Models: SNGR 08J07, 10K08, 12M08, 16Q09, 20R09 Compatible with GR series turning tools: 6GR, 7GR, 8GR, 9GR Note: 8GR option is sold without cutter bar and without insert (NO cutter bar, NO insert) Why you need this tool holder Purpose-built for internal grooving and hole turning on lathes to deliver precise, repeatable cuts with minimal setup. Indexable design reduces downtime: change or rotate inserts quickly instead of regrinding, improving productivity and tool life management. Direct compatibility with GR series turning tools (6GR/7GR/8GR/9GR) lets you add internal grooving capability without replacing your toolpost or existing holders. Key features and benefits Designed for internal grooving and hole turning where access and stability are critical. Accepts indexable inserts for fast replacement and consistent cutting geometry. Five model sizes (SNGR 08J07, 10K08, 12M08, 16Q09, 20R09) to match different reach, clearance, and part sizes. Fits established GR series tool systems for straightforward integration and interchangeability. Clear supply note for the 8GR option: sold without cutter bar and without insert — confirm required components when ordering. Function, compatibility and performance Function: internal grooving, light internal profiling, and hole turning on manual or CNC lathes. Compatibility: designed to work with 6GR, 7GR, 8GR, and 9GR turning tool systems. Performance: indexable format provides consistent cutting geometry and faster changeovers, reducing setup time and scrap. Typical applications (2–3 practical use cases) Machining bearing races and sealing grooves where precise groove width and surface finish are required. Turning piston cup interiors, valve seats, or other internal features in prototype or production parts. Light internal profiling and hole turning in cylindrical workpieces during retrofit or expansion of GR series tooling setups. What to consider before ordering Choose the correct SNGR model (08J07, 10K08, 12M08, 16Q09, 20R09) based on reach, clearance, and toolpost configuration for your specific internal operation. Verify compatibility with your existing GR turning tools (6GR, 7GR, 8GR, 9GR). Note that the 8GR option is listed without cutter bar and without insert; order cutter bars and inserts separately if required. Practical advantages Faster insert changes and consistent indexable geometry reduce machine downtime and scrap rates. Standard GR series compatibility simplifies inventory and tooling logistics. Multiple model options let you match the holder to part dimensions and machining access without replacing your tool system. Use this SNGR inner groove / hole indexable lathe turning tool holder to add reliable, indexable internal grooving capability to GR series turning setups. Confirm model selection and included components (especially for the 8GR option) before finalizing your order.