There are 2 huge differences between the 2762 (pin detent) & 2763 (friction ring) impacts.
1. Power level.....
2762 has 900 ft-lbs max reverse torque.
2763 has 1,100 ft-lbs max reverse torque.
2. Anvil.....
2762 (pin detent) is made for industrial applications where the socket is rarely removed & cannot "accidentally" fall off. Think of installing the same sized bolts/nuts all day everyday (i.e. - steel construction).
2763 (friction ring) is made for general use & automotive techs, where you will need to change sockets often & have more power to remove stuck fasteners. If you are working on cars, this is the one you want.
Here is my review on the 2763...
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