【Compatibility】The pop up center piece assembly is designed to be compatible with Price Pfister Pop up stopper and other popular brands of pop up,replacement for PS469,PSB327 and PS2673. 【2 Specification Sizes】The first is a medium size, with a ball diameter of 0.7 In, short rod size of 1.45 In, long rod size of 4.5 In, the diameter of the rod is 0.22 In, interior diameter of green nut (where the threads are) of 0.81 In; The other one is a small size, with ball diameter of 0.6 In, short rod of 1.38 In, long rod of 4.6 In, rod diameter of 0.2 In,interior diameter of nut is 0.75 In, interior diameter of plastic gaskets is 0.6 In. 【2 Pack Pivot Rod Bathroom Sink】The package includes 2 rods of different diameter size (small and medium), 2 polypropylene pivot balls of different sizes(0.7In/18MM and 0.6In/15MM), 2 plastic gaskets, 2 steel spring clamps, 2 ball nuts and 1 Teflon Tape, the different diameters to ensure that one of the sizes is right for your needs; no need to worry about ordering the wrong size, one of the rods will fit. 【Replacement Pop up Ball Rod】The metal pop up ball rod attaches the stopper to the lift rod and allow the stopper to open and close. 【Chrome Plated Surface】 The sinks pop up stopper pivot arms are constructed of metal and chrome plated finish ,it's sure to complement any bathroom faucet. 【2 Specification Sizes】The first is a medium size, with a ball diameter of 0.7 In, short rod size of 1.45 In, long rod size of 4.5 In, the diameter of the rod is 0.22 In, interior diameter of green nut (where the threads are) of 0.81 In; The other one is a small size, with ball diameter of 0.6 In, short rod of 1.38 In, long rod of 4.6 In, rod diameter of 0.2 In,interior diameter of nut is 0.75 In, interior diameter of plastic gaskets is 0.6 In.