These are very easy to source - either online or at pretty much any marine store - so that part is easy/good. The next thing you'll need to know is the ball diameter (probably 10MM), open/closed length and the 'pounds' of lift. I 'think' this is all listed in your owner's/parts manual. But a call to Grady will give you that info, as well. Although the easiest/quickest thing to do is to get it from your local dealer, once you have the specs you can get it just about anywhere. Prices will range based on brand/style (painted, SS, hybrid, etc).