Dapra’s Toroid Line now includes four high-performance inserts (Button, High-Feed, Square, Octagonal) to maximize the versatility of our Toroid cutting tools:

Match the insert R value to the designation on your cutter body. Reference the "Insert" column in our Cutter Body ordering information charts to match available inserts to a specific cutter.
‡ Fits 1-1/4" diameter and above only.
End mill cutters accept Button, High-Feed and/or Square Inserts. Refer to the chart here to choose the correct end mill for your application.
All shell mill cutters with the R4 designation use Button, High-Feed and Square Inserts. All cutters with the R5 or R6 designations can use either the Button or Octagonal Inserts.
Dapra Toroid products are made in the USA.