25 pcs Soviet CBN Cutting Tool Inserts 5.5x5.5x3.2

25 pcs Soviet CBN Cutting Tool Inserts Ø5.5x5.5x3.2 mm – Boron Nitride Composite USSR Set of 25 vintage Soviet cutting inserts made from superhard composite material based on cubic boron nitride (CBN / Композит). Manufactured in the USSR for metalworking and precision machining applications. Specifications: Material: Cubic Boron Nitride Composite (CBN) Quantity: 25 pieces Diameter: 5.5x5.5 mm Height: 3.2 mm Origin: USSR / Soviet Union Condition: New old stock (NOS) / unused storage condition These inserts were used for machining hardened steels, cast iron, and other difficult-to-machine materials. Soviet superhard composites are known for durability and wear resistance. Suitable for collectors, machinists, toolmakers, and industrial use. Package includes: 25 × CBN inserts Notes: Please check dimensions carefully before purchase. You will receive exactly what is shown in the photos. Vintage Soviet industrial tooling. Keywords: CBN insert, boron nitride, Soviet tooling, USSR tools, cutting insert, lathe tool, superhard material, composite insert, machinist tools, metalworking. Please Note: All items are shipped directly from Ukraine, so delivery may take a little longer than domestic shipping. Every order is carefully packed, and tracking is provided whenever available. My VAT registration is currently being processed and will be available soon. I specialize in new old stock (NOS) industrial tooling, including a large selection of made in the USSR tools, as well as premium tools from Germany, Japan, the USA, Italy, and other leading manufacturers. I offer a wide range of drills, taps, dies, end mills, reamers, centre drills, countersinks, measuring tools (micrometers, calipers, gauges), and many other metalworking tools. I have a very large inventory, and not everything is listed yet. If you are looking for a specific tool, please send me a message—I may already have exactly what you need. A large shipment of tooling will soon be transferred to Ireland, making many