(TRONHARVESTER-C) Oregon chain sprocket for mechanized cutting, designed to fit .404" pitch 16H, 18H and 18HX chains. Z Code 10 TRONORC10404 11 TRONORC11404 12 TRONORC12404 13 TRONORC13404 14 TRONORC14404 15 TRONORC15404 16 TRONORC16404