5 pcs Nozzles 1/2" Flush fit Lincoln Work Pak 125 WorkPak 12191 Welder Attention: Due to the existence of multiple versions of Lincoln's Work Pak 125 welder, please check and verify that your welder's code number is 12191 before making a purchase. The code number for Lincoln welders can be found on the number plate of the welder and is a 5-digit code.