Why it is included
The product listing notes: Up to 25% thinner head* for access in tight spaces (1/4" DR & 3/8" DR only as compared to CMMT81747, CMMT81748, & CMMT81749). This feature may be useful for socket wrench set use; long-term durability has not been independently tested.
Listed features guide this comparison; longevity depends on use and maintenance.
