Defence Oil OX -538 size:10L Leaves a durable barrier that

Leaves a durable barrier that shields against salt spray

102 inches (28mm)

and precision instruments

there are many Chinese brand also making same inserts so you can just check description of size from other brands to fix this insert

and gearboxes

Defence Oil OX -538 size:10L Leaves a durable barrier thatApplications of Defence Oil OX 538 5L Z Premium OX 538 is a special grade rust preventive oil formulated for long term corrosion protection of military grade weapons, tools, machined parts, and metal surfaces. It provides a dry, non tacky protective film, ideal for situations where clean, residue free protection is critical, especially during storage, handling, and overseas shipment. Long Term Corrosion Protection Designed for safeguarding ferrous and