Scientific Cutting Tools’ 1/4" Right-Hand Triangle Insert Indexable Boring Bars with Coolant Holes are engineered for precision internal machining in small bores. These tools feature a heat-treated steel head and a micro-grain carbide shank, combining strength with vibration resistance. Designed to accommodate triangle-style inserts, the coolant-through design ensures consistent chip evacuation and reduced heat buildup, even in deep or blind holes. Ideal for tight tolerance applications, these right-hand bars offer durability and performance in demanding environments.