30 degree - Substitute for Gerber P61639A with brass collar. For best results, use for cutting on 2-6 mil materials with an offset of .0193.
45 degree - Substitute for Gerber P61639A with brass collar. For best results, use for cutting on 6-12 mil materials with an offset of .0193.
60 degree - Substitute for Gerber P61639A with brass collar. For best results, use for cutting on 12+ mil materials with an offset of .0193.