Product Descriptions ??Compatibility?? 1-1/4 in Malleable Point Well Drive Cap is suitable for drive well points with 1-1/4″ Pipe Size. MPN: 1695, DRCAP 125 ??Superior Material?? Well point cap is made of high strength all steel construction withstands pounding force necessary to drive a well point into the ground. Corrosion resistance and high durability. Has inside recess to prevent damage to pipe threads. ??Protect Threads?? Screw the well point drive caps onto the threaded end of the well point. Protect the threads from damage when the well point is driven into the ground. .