LOW PROFILE RATCHET: Up to 25% thinner head for access in tight spaces (as compared to CMMT81747 & CMMT81748). 72-TOOTH RATCHET: Delivers 5 degree arc swing. EASY TOOL STORAGE: Durable Blow Molded Case. ALL IN ONE MECHANICS SET: Contains a full assortment of sockets, ratchets, and specialty bits for automotive enthusiasts and mechanics. CORROSION RESISTANCE: Full Polish Chrome Finish.