there are 2 different sizes of hooks
3.5
5
the mesh makes the difference the 3.5 means 3/5 holes per inch
the 5 means 5 holes per inch
the 5 will make a denser rug or latch hook also more fun
try not to use a 3.5 ona 5 mesh as it will get the shape messed up and dont forget to start
latching on the horizontal threads not the twisted ---
hope this helps email me if you want to always glad to help
gummiepig