
Made of carbide steel to assure extra long life, these inside ring burs are used for deburring, smoothing and finishing the insides of rings. Great for cleaning up hollow contraction ring and remove sprue from casting.
This a larger version of inside ring bur (rotary files)
Head Diameter: 3/8".
Head Length: 3/4".
Shank: 1/8".
Cut: Fine.