This same kit (with the larger battery, etc.) sells for $179 at Home Depot. This kit is even cheaper than the "deal" that Home Depot is offering on a kit with the smaller 2.0Ah battery (and likely a slower/weaker charger).
Details on this 2475-21XC kit:
Fastest Cordless Tire Inflator. The Milwaukee M12 Compact Inflator delivers fast, accurate, easy inflation with the portability to take anywhere. The inflator has the capability to complete demanding applications like car, LT truck, and compact equipment tires, the M12 Compact Inflator gives users ultimate power and efficiency. Rated to deliver over 120 PSI, The high efficiency motor and pump top-off car tires in under 1 minute. The True Fill Auto shut-off technology delivers highly accurate pressure, protects from overfill, and automatically senses speed of fill to deliver precise shut-off at the desired PSI. Additionally, the unit includes a large easy to read back-lit LCD, anti-vibration feet, and 26 in. hose with an all brass Schrader chuck.
Fastest cordless tire inflator: top-off a car tire in under 1 minutes (28 - 35 PSI)
Inflates car, LT truck, and compact equipment tires
REDLINK intelligence: true fill auto shut-off technology increases accuracy, protects from over-temp and over-fill
High efficiency pump and motor for true 120 PSI capability
Illuminated digital gauge with target and current pressure reading
Top off a car tire in under 1 minutes 28-35 PSI, fills a LT truck tire in under 4 minutes 30-45 PSI
Compact, portable, and easy-to-store in any car or truck
Weather and impact resistant with a reinforced cage
Anti-vibration feet for no tool movement while running
3 year limited warranty
Includes: 2475-20 M12 Compact inflator, 48-11-2440 M12 XC RED Lithium 4.0 battery pack, 48-59-2401 M12 Lithium-ion battery charger ball inflation needle, presto chuck, Schrader chuck, inflator nozzle