The square shaft has rounded corners which allow it to spin easily in a round hole, while locking to a square hole.
Caracteristics :
• Three length: 2", 3", and 12".
• Use the 12" to make your own custom length shafts.
• Works with motors, wheels, gears, and bearings.
Specifications :
• Drive Shaft 2"0.011 lbs (4.99 grams).
• Drive Shaft 3"0.013 lbs (5.80 grams).
• Drive Shaft 12"0.048 lbs (21.9 grams).
Kit Contents :
• (4)Shaft, Square Bar 2"
• (4)Shaft, Square Bar 3"
• (4)Shaft, Square Bar 12"