Rotary Files / Inside Ring Burs

Inside ring burs are used for primary finishing of ring castings. They are much faster and more precise than hand filing. Because of where they are generally used (on a motor instead of at the bench), gold recovery is significantly better. 

High Speed Inside Ring Burs

Shank Diameter Head Diameter Length of Cut Cut Stock# Price   Shank Diameter Head Diameter Length of Cut Cut Stock# Price
332" ½" 1" Standard 33.629 Buy $43.55 ⅛" ½" 1" Standard 33.635 Buy $43.20
½" 1" Fine 33.630 Buy $68.75 ½" 1" Fine 33.636 Buy $68.75
½" 1½" Standard 33.631 Buy $31.45 ½" 1½" Standard 33.637 Buy $31.45
½" 1½" Fine 33.632 Buy $75.95 ½" 1½" Fine 33.638 Buy $77.45

 

 Carbide Inside Ring Burs

Head Diameter Length of Cut Cut Shank Diameter Stock# Price

 

Head Diameter Length of Cut Cut Shank Diameter Stock# Price
½" 1" X-Fine ¼" 20.290 Buy $32.70 ½" ½" Fine 332" 20.01401 Buy $17.10
½" 1" Fine ¼" 20.291 Buy $35.60 ½" ½" X-Fine 332" 20.01402 Buy $17.10
⅜" ½" Fine ⅛" 20.292 Buy $20.00 ½" ½" X-Coarse 332" 20.01403 Buy $17.10
½" ⅝" Fine ⅛" 20.293 Buy $17.70 ⅜" ½" Fine ⅛" 20.01404 Buy $29.60
            ⅜" ½" X- Fine ⅛" 20.01405 Buy $29.60
            ⅜" ½" X-Coarse 18" 20.01406 Buy $29.60