I bought a knock off tial wategate of ebay about two years ago and just now got around to take it apart to look at the spring. the spring is a big black spring and it is stiff as hell. according to tial they only have like 4 or 5 colors cant remember and black isnt one of them. it measures 2 1/4 by 4" tall. i just wanted to know. either way im changing it.