Steering Shaft; 1in.-DD Steel tubing; 36in. LongSteel Double-D steering shaft. 1in. Double-D full length of shaft; 36in. long.Steering ShaftBorgeson Universal Steering Shaft Double-DBorgeson 1" Double-D steering shaft tubing is available in steel only. The advantage to Double-D shaft is the flexibility it offers. This is the standard 1"DD tubing used on many General Motors vehicles.Steering Shaft