Here is brand new 1 Oregon Armor tip hard nose Professional 42 inch bar (423ATLE086), bar uses a - 404 pitch .063 gauge 124 drive link chain. This bar fits the following model Stihls with 404 pitch sprocket models- 06,070,090 . This also fits some of the new Chinese made 070 and 090.
.553 or 14mm inside bar slot.
Can be modified by drilling a new adjustment and oil hole to fit other models with same inside slot.