Perfect for portable cooking stoves, geyser/water heaters, heaters and lamps. Rack brackets securely hold your gas/propane bottle on your rack. 2 latches feature a safety catch to prevent any movement and are lockable with a RRCA134 for added safety. The removable collar is placed over the cylinder valve collar and latched on the rack brackets. The collar rods are adjustable to suit various bottle heights. Max Cylinder Height: 320mm (12.6'')Max Cylinder Diameter: 280mm (11'')Max Top Collar Diameter: 175mm (6.9'')Max Weight: 10kg (22lbs)