The handle on it is about 30" long. It worked perfectly. I had the diff in the diff holding jig I made and it was chucked into my large bench vice. I welded two bolts into the existing flange holes with nuts to secure them to the diff flange being tightened. I bolted my flange tool to the flange on the diff then used a 1/2" breaker bar on the nut with a pipe on it for an extension handle on it to turn the nut. Once the flange/nut made contact with the crush sleeve, I needed every inch of leverage I could get to start crushing the sleeve down in a slow, controlled compression.
I began by pouring gear oil onto the pinion bearings and slowly turning the pinion bearings by hand to work the gear oil into the bearings and cups. I wanted to be able to measure the bearing resistance WITH gear oil coating them as it would when the diff was assembled and in operation.
Initially, you can check the play in the flange visually. If the flange is still "floppy" in the diff (moves back and forth) you know you aren't even close... yet. I'd turn the nut about 1 1/2 times then check the play in the flange to the diff.
Once I made contact with the crush sleeve (and you will know), I'd turn the nut about a full turn with the breaker bar/pipe extension, then pull the flange tool and socket and breaker bar off and check the resistance with the inch pound torque wrench. I'd put the inch pound torque wrench on and rotate it about two complete revolutions while carefully watching the needle on the beam to discern the "average" inch pounds of torque.
Then I'd drop it down to just 1/2 turns with the breaker bar/extension. Check it again with the inch pound torque wrench. Then drop it down to 1/4 turns. Check it again. Then drop it down to 1/8 turns when the resistance on the inch/pound torque wrench started to get around the 5-6 inch pounds area. I finally settled on between 13-15 inch pounds of drag on the pinion flange and called it good. The factory FSM calls for 14 inch pounds of initial resistance (without the ring gear being installed).
After my ring gear was installed back into my diff with the new side bearings and the side bearings adjusted so I had around 0.05-0.08ths gear lash play, I checked the pinion drag again. It remained at/around the 14 inch pounds.
WELL over a thousand miles on the diff rebuild now and... knock on wood, it is still performing well.