Modular polo mallet head design

Here are some UK ABS sellers.

Caps, seem to be the right thing, either 1.5" or 2", depending on what you like:

http://www.pipe-out.com/acatalog/Online_Catalogue__ABS_End_Cap_143.html

This place seems to have a better stock of pipe and other fittings. I'll need to call them and figure out what the different classes of pipe are:

http://www.kiowa.co.uk/Products/Pipe_Fittings/ABS_Pipe

good find, let us know what you find out regarding pipe classes.