Miller® Spoolmate 100 MIG Spoolgun 300371 The Miller Spoolmate 100 MIG is a reliable and economical direct connect spool gun for Millermatic Autoset 140, 180 and 211 MIG welders and Multimatic 200, 220 and 235 multi-process welders. The Spoolmate 100 is excellent for feeding one pound spools of small diameter aluminum MIG welding wire. Spoolmate 100 Series spool guns provide 12 ft (3.7 m) of cable reach and accessibility for smooth feeding of aluminum wire. 1TKC4,1TKC5,2RUA2