This great starter set includes 6 course, 6 medium and 8 fine triangle needles.  You can tell the size by comparing the needle length (the courser the longer) and looking at the working part.  The needles are stored safely in a plastic tube and the kit includes a handy wooden needle holder, for more comfortable felting.
 
Triangle needles are the standard felting needle, included in most kits.  The higher the gauge (G), the finer the needle.  A coarse needle (36G3) will felt faster whereas a fine needle (40G) will give a better finish to your work (less visible holes).
 
The kit includes:
 
1 x wooden needle holder
6 x triangle needles - course, 36G
6 x triangle needles - medium, 38G
8 x triangle needles - fine, 40G
1 x plastic tube
 
For ages 12 to adult
 
NOT SUITABLE FOR CHILDREN UNDER 12
The kit contains metal needles with very sharp functional points.  Please supervise use as appropriate.