Crewsaver Yellow Exolok can be used with Halkey Roberts 840 firing head only, it will provide increased security for gas cylinders attached to a life jackets operating mechanism. Exolok once secured, provides a clear indication if the cylinder moves, becomes unscrewed or tampered with. Made up of 3 parts, the unit, adhesive sticker and a mess over sleeve.
- Simple and easy to install.
- Highly visible locking indicator.
- Fits Halkey Roberts mechanism only.