Application: For use with SWA, Plastic and Rubber (Elastomer) sheathed cables. Indoor & Outdoor whenever it is equired to provide sealing on cable outer sheath. Sizes: Metric - 20mm to 75mm (S/L) Imperial - 3/4" to 3" (S/L) Function: BW glands are weatherproof glands and can be used in corrosive conditions when protected with shroud. Positive armour locking, effective earth continuity, increased mechanical strength.