Reply to TT Needle Replacements?

Hey guys, I have a pair of Numark 1625 TTs that a buddy gave me, but there are no needles/cartridges/headshells. There is just an area that looks like something round needs to be screwed in.

Could someone help me out with what I need? I did some research and it looks like I need the headshell, cartridge, and needle.

Here's a HS-1 with Groove Tool I found on Instrumental parts: http://www.instrumentalparts.com/twmt320030105.html

I don't know if the needles is included though or does it always come with groove tools?

I also found this on the Numark website:
http://www.numark.com/product/groovetool

But it says headshell not included.



Can someone recommend the best path? I'm not trying to spend a fortune, just looking to get these turntables working so I can mess around with them.



Thanks!