Easily Replaceable Screw Spikes for Concrete ties is used with plastic inserts pre-cast in concrete sleepers. Pama International offers Easily Replaceable Screw Spikes for Concrete Ties. Pama International supplies various types of railway track components, automobile forgings and machining, alumina balls, flooring compound, mining tools rail clips. Easily Replaceable Screw Spikes for Concrete Ties is also idea on high-speed tracks with the extremely popular H.M. Fastening. This Screw Spikes is easily replaceable in nature And reduces in cost of track rehabilitation.