10pcs Soviet CBN Cutting Tool Inserts 4.8x3.2 mm Boron Nitride Composite USSR

10 pcs Soviet CBN Cutting Tool Inserts Ø4.8x3.2 mm – Boron Nitride Composite USSR

Set of 10 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: 10 pieces
Diameter: 4.8 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:
10 × 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 review the detailed photos carefully to assess the condition of the actual item you will receive.