Material: Tungsten carbide insert Brand: YUFUTOL If you don't need this combination, we have a lot of such combinations, and you can pick it up by YUFUTOL, for example: 1. Round carbide inserts 6pcs: 8.9mm, 11mm, 12mm, 15mm, 16mm, 18mm; 2. 15mm Square carbide inserts with Radius 4pcs: 11112.0mm-R5015152.5mm-R5015152.5mm-R10015152.5mm-R150 3. Mini Size 5pcs10.510.51.5mm11112.0mm-R508.9mm Round 12mm Round2810mm Diamond with sharp Point 4. Full Size 5pcs14142.0mm15152.5mm-4R0.515152.5mm-R5016mm Round2810mm Diamond with radius Point 5. Full Size 3pcs15152.5mm-R10018mm Round2810mm Diamond with sharp Point 6. Middle Size15152.5mm16mm Round2810mm Diamond with radius Point 7. Mid mini Size11112.0mm-R5012mm Round2810mm Diamond with sharp Point 8. Round carbide inserts 2pcs12mm16mm 9. Diamond carbide inserts 2pcs2810mm Diamond with radius Point and with sharp Point 10. 15mm Square carbide inserts 2pcs15152.5mm-R10015152.5mm 11. Mini Square carbide inserts 2pcs: 10.510.51.5mm, 11112.0mm-R50; 12. Round carbide inserts 2pcs8.9mm15mm. The carbide cutter kit is our special conbinations based on the spending habits of most customers. You can also match this carbide cutter set with YUFUTOL Full size Tools accordingly, all these tools are just launched andavaliable in our amazon store and Fullfiled by Amazon's shipping and customer services. Have a nice day