Per the Ingersoll Rand site this kit fits model 261 3/4" drive and 271 1" drive impact wrenches.
2131-TK2 INGERSOLL RAND 2131-TK2 CUSTOM 1/2" DR. TUNE UP KIT + 2131-D93 TRIGGER
2950-TK2 Ingersoll Rand Tune-Up Kit With Bearings For Model 2950, Part 2950-TK2
2145 TK2 INGERSOLL RAND TUNE UP KIT FITS 2145QiMAX & 2155TiMAX OEM IR VANES
2135-TK2 Ingersoll-Rand Tune Up Kit For IR Models 2135TiMax, PTi, Ti & 2350XP
2135-TK2 Ingersoll-Rand Tune Up Kit For Models 2135TiMax, PTi, Ti & 2350XP