Here is 6 brand new Oregon Full Chisel Full Skip chains. This is Oregons version of 33RSF 72 chain. This chain works on most 20" bar .050 gauge (1.3)mm with 3/8 pitch and use 72 drive links. Part number is 72JGX072G. These chains are the new JGX pro series with the blued cutters for improved strength-very fast cutting-and what all the loggers use in this area.This is not safety chains.This is full Chisel cutters made from OCS-01 steel provides greater durability especially in cold cutting conditions pack of (6) chains for $92.95