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Dapra’s RHINO-CARB high-performance insertsare designed for very aggressive metal cuttingand long tool life.Pressed Toroid InsertsStronger cutting edge for heavierchiploads, greater shockabsorption and longer tool lifePositive top rake forreduced cutting forcesand lower torqueThicker inserts for greater strengthand enhancedheat-absorption capabilities“T” inserts have a strong, negative reinforced cuttingedge for steels, irons and hard milling.“D” inserts have a high-positive cutting edge for stainlesssteels, high-temperature alloys and gummy materials.Important! These thickerpressed inserts may causeyour cutter to cut a slightly largerdiameter than with ground inserts.Always measure tool diameter before use.“N” inserts (round and octagonal only) are more positivethan the “T” edge, but stronger than “D.” The “N” shouldbe your go-to geometry for most steels, cast irons and400-series stainless applications.Dapra’s Toroid Line includes three high-performance inserts,including our RHINO-CARB line, to maximize the versatilityof our Toroid cutting tools:Match the insert R value to the designation on your cutter body.R3Button Inserts Square Inserts Octagonal InsertsR4R5R6RPMHRDCH & RXCH (ground)R4 ‡SXEH‡Fits 1 1 /4" diameter and above only.R4R5R6OPMHOXCH (ground)2R3: 3/8" IC Cutting Tools & Inserts 4-5R4: 1/2" IC Cutting Tools & Inserts 6-7R5: 5/8" IC Cutting Tools & Inserts 8-9R6: 3/4" IC Cutting Tools & Inserts 10-11Modular Heads and Extensions 12-13Application Information 14Troubleshooting, Optimizationand Reference Information 15-16Metric Cutter Bodies, Inserts,Spare Parts & Tools 17-18Spare Parts 18Insert Grades 19Recommended Cutting Speeds 20