Insulated Drive Roll Kits are used to prevent preheating of the aluminum wire which may soften it and clog the liner. This picking up of current at the drive rolls rather than at the contact tip is usually not a problem unless using too large of a contact tip or excessively oxidized aluminum wire.
Kit includes drive roll and idler roll
.030” (0.8 mm) - 005-0715
.035” (0.9 mm) - 005-0716
.040” (1.0 mm) - 005-0717 - Discontinued, use 005-0718