The pump body shall have a base plate with four foundation bolt holes exactly 9 inches square (i.e. 228.6mm) and a diameter of 20mm (Bore size) to conform to the CWSA Ghanaian standards. Riser Pipe with tip-stretched (not welded-on) spigot (male end) and socket (female end), for connection purposes furnished with male/female Rope Thread at pipe and to avoid wear and tear between the rods and pipes during operation a centralizer is to be provided The 10.8 mm dia stainless steel pump rods for the connection to the above mentioned GMIMKII reciprocating hand pumps shall have rolled on threads The full brass pump cylinder shall be assembled for the employment together with the above � mentioned components that are the above ground system the lightweight riser pipes and stainless steel pump rods.