Carlson's Choke Tubes New Choke Tube Lube Excellent for use on all choke tubes Also works great on full-auto locking lugs, sears, bolts, and slide/rails Smooth and clean operation in the severe cold (-100 Degree F) and will hold up under extreme heat (+750 ) as well Offers extreme pressure properties that are guaranteed to reduce friction and wear on weapons and choke tubes Has Lifetime warranty