The round carbide cutter 8.9mm is compatible with
(8.9x1.85mm round carbide insert blade is same as Easy Wood Tool (EWT) Ci5 carbide cutter)
Easy Wood EWT Mini Easy Finisher
Easy Wood EWT Micro Easy Finisher
Easy Wood EWT Mini Easy Hollower#1 #2 #3
Easy Wood EWT Mid-Size Easy Hollower#1 #2 #3
Peachtree Savannah Hollowing tool 7540, cutter 10755
Penn State Industries LXPMBR Ultra Carbide Chisel