Our heavy duty removable drive shaft loop features 12 two inch, thick wall, threaded tubes that space the oval plates outward. This provides access to weld your crossmember to the tubes thus making the loop plates removable. The inner opening is 4.5" x 10". The plates are aproximately 2" widy by 3/16" thick and are made of US mild steel. 3/8" zinc plated bolts and hardware are included and may be upgraded to button head stainless below.