This is a Crouse Hinds BJ44 copper braided bonding jumper. It works with 1" and 1-1/4" expansions joints.  It has 4 inches movement. 
   

 I also have most other sizes in my store.   Check my feedback and buy with confidence.  We have been in business for 20+ years.  As with all my listings, your satisfaction is guaranteed.  I can ship same day ups if the order is received before 3:00 pm central.  Check my store for more fittings or contact me for items not listed.