These reamers are made of SOLID CARBIDE, NOT carbide tipped.
These reamers are 10" long with a 2" pilot. They are precision cut for aviation use. Carbide reamers are highly recommended for cast iron guides.
There are different views on methods of reaming cast iron. We have always used coolant during the reaming process.
*** If you have any questions about which reamer you need for your application, or have custom reamer needs, please contact us. ***