This carbide bur set features high quality double-cut USA made Kodiak brand carbide burrs which are made from premium carbide. This kit contains 4 burs in assorted style heads on 1/4" diameter x 6" long shanks for a wide variety of grinding and deburring tasks. Assortment includes double-cut burs on a 1/4" x 6" shank in the following shapes and head diameter sizes: SA-3 3/8" cylindrical bur (non end-cutting) SC-3 3/8" cylindrical ball nose bur SD-3 3/8" ball shape bur SF-3 3/8" round nose tree shape wooden stand.