Small Hole Grooving MB-05GR/07GR/09GR Bar Comma Blade Internal Hole Cutter Deep Groove Cutter Grain For Internal Grain Turn Tool
These small-hole grooving comma inserts include MB-05GR, 07GR, 09GR models with matching toolholders. Crafted from high-grade coated carbide with a unique comma structure, they are purpose-built for deep inner bore grooving up to 6.5mm, with full specifications for versatile matching.
The unique comma geometry ensures smooth chip evacuation even in deep narrow grooves, eliminating chip clogging. The wear-resistant coating delivers excellent chipping toughness, achieving clean groove walls and highly consistent dimensional accuracy in tiny bore machining.
Ideal for grooving and deep slotting of small-diameter inner bores on CNC lathes, they cover multiple groove widths and depths. Their long service life reduces tool changes, cuts inventory costs and effectively improves overall machining productivity.
