Birchwood .75 Ounce Casey Choke Tube Lube is great for the hunter. This choke tube lube prevents stuck choke tubes caused by corrosion, high stress of steel shot loads, and extreme temperatures and pressure from repeated trap and skeet shooting. Choke tube lube is compounded from fine metallic particles of nickel, aluminum, and graphite into a non-evaporating lubricant that will withstand heat and prevent seizure even at extreme temperatures up to 2600° F. Providing maximum lubrication against friction this choke tube lube also is an excellent corrosion protection from rain and salt water. Choke tube lube is a superior anti-seize lubricant compound that guarantees easy choke tube insertion and removal for all regular and stainless steel tubes. Also this lube excels as a universal lubricant and eliminates galling on stain-less steel.