Listing is for (1) 3-Lip Shaper Cutter made by Ryobi back in the 1980's 
Have Multiple Types (B-E-H-I-K-N-P-R-E)
Dimensions:
   Bore: (all) Approx 1/2" (0.510 inch)
   Type (B) Height 1" / Upper Diameter 2" 
                  Lower Diameter 1.20"
   Type (E) Height 1" / Diameter 2"
   Type (H) Height 1/4" / Diameter 2"
   Type (I)   Height 1/2" / Diameter 2"
   Type (K) Height 1" / Diameter 2"
   Type (N) Height 1" / Diameter 2"
                  Lg Tooth Width 0.26"/Sm Tooth Width 0.14" 
                  Notch 0.23"
   Type (P) Height 1" / Diameter 2"
                  Depth of Notch 0.60"
   Type (R) Height 1" / Diameter 2"
                  Lg Width 0.50"/Sm Width 0.15"
                  
Condition: New Old Stock in Original Unopened Package - 
                  Package may Have Signs of Storage / Age - 
                  and Some "Minor" Surface RUST that is Spotty 
                  SEE INDIVIDUAL PICS FOR DETAILS!!!

Shipping: Free Shipping
Return:     Free 30 Day Return

Inventory: E-2181