What is micro-texture grip and how does it improve the drill?

Micro-texture grip is tiny texture details in the rubber overmold that increase the grip and tactile control of the tool equipped with this feature.

What is the difference between the 3/8” Drill/Driver (17191) and ½” Drill/Driver (35703)?

What is the difference between the ½” Drill/Driver (35703) and ½” Compact Drill/Driver (35705)?

What is the difference between the ½” Compact Drill/Driver (35705) and ½” Heavy-Duty Drill/Driver Powered by XCP (35704)?