Briley Black Oxide Spectrum Choke Tube for 12 Gauge Browning Invector DS.
 
Total length is 3-7/8" (so you can tell which case they will fit in).
 
PLEASE MAKE SURE YOU KNOW YOUR CHOKE SYSTEM BEFORE ORDERING, NOT RESPONSIBLE FOR WRONG CHOKES ORDERED OR DAMAGES TO GUN!
 
If you don't see what you're looking for in my store, contact me and I'll get it for you.