Shaft telescopes to accommodate the rearward thrust of the steering shaft during compression of the front of the chassis brought about by a front impact crash. The splined lower shaft is retained by an internal spring clip and may be removed by exerting a sharp pull - like that used to remove a front-drive axle. The #WOOSCA500 is designed to be tested for proper tunction at any time by disconnecting its U-Joint from the steering box and telescoping the unit by hands. NOTE: UNDER NO CONDITION SHOULD THE UNIT EVER BE INSTALLED OR USED WITHOUT THE BOOT.Pit Stop USA offers Woodward Safety Steering Column SCA500 at low everyday prices. Be sure to check out all of our products from Woodward including Woodward Steering Columns and Woodward Steering Columns and Shafts.