TPG-221 carbide insert is a 60° triangle with a 11° relief. There is no chipbreaker or screw hole. It has an inscribed circle (IC) of 0.25" (1/4"), a thickness of 0.125" (1/8"), and a corner (nose) radius of 0.0156" (1/64").
The insert is designated TPG221 (ANSI) or TPGN110304 (ISO). For a list of compatible LittleMachineShop.com products, see the Compatibility tab.
Inserts are sold individually—no need to buy a pack of 10 inserts.