Comparison : Item # 188STAR, 0.178/0.198 Inch (in) Thickness (t) Star Cutting Tool Insert
Item # 250STAR, 0.240/0.260 Inch (in) Thickness (t) Star Cutting Tool Insert
Item # 312STAR, 0.302/0.312 Inch (in) Thickness (t) Star Cutting Tool Insert
Item # 375STAR, 0.365/0.385 Inch (in) Thickness (t) Star Cutting Tool Insert