1) Acme threaded rods require half as many turns as a normal bolt to move.
2) Expansion nuts can be turned with a round rod instead of a wrench. Rear axle housing and spring do not obstruct turning. Turning rod is included with each spreader.
3) Ball thrust bearings further reduce friction for easier spreading.
4) Slots in the spreader frame and hardened cross pins thru the threaded rods keep the claws oriented with the spreader frame. Eliminates the aggravation of holding loose components in position while engaging claws in teh spring ends. Keeps spreader upright above differential.
5) Unique spring keeps the threaded rods up against the spreader frame so they do not slip or drift downward.
6) heavy duty claws with side guides trap the spring end curls for added safety. Unobstructed access for removal and installation of shackles.
7) 10 leaf model A springs produce about 2000 lbs of force. This spreader has been tested at over 4000 lbs.
