The SLND-M257 is a one-piece straight polyamide fitting for flexible non-metallic conduit size NW17 used in machine building, installation, and construction industries. It is characterized by easy installation (simple push-fit assembly), re-opening with a screwdriver (for security reasons, hand opening is not possible), space-saving due to its compact design, and fitting both conduit profiles-fine (T) and coarse (G). The overall length is 42.0mm, and the diameter is 31.0mm.