Napier Power Airgun Grease is a great bit of kit, providing a specially formulated substance to be used on piston & pre-charged airguns. This Napier grease contains VP90 which prevents corrosion and rust. This grease is designed to be used on springs and internals parts, without causing any damage to thrust washers or seals. Airgun Grease Features Napier Of London gun cleaning equipment Designed for application on springs Grease won\'t damage thrust washers or seals Prevents rust and corrosion Contains VP90 corrosion inhibitors 25ml tube Napier\'s Ref. MPN: 3034A Sizes: 25ml PM Ref: 939964