Authentic Easy Wood Tools Ci5 Round Carbide Replacement Cutter for  Mid Size Hollowers Lathe  Woodturning Tools Ci5 Authentic Easy Wood Tools 100% manufactured in the USA by the leader in carbide insert lathe woodturnings technology Ci5 round cutter designed for all Mid Size Hollowers ; .340" diameter x .065" thick; 4-40 screw. The perfect grade of carbide produces the best combination of sharpness and durability Optimal grinding process produces the flattest and truest cutting surfaces The right geometry or cutting angle is ground to the produce an edge the cuts cleanly and safely.