Tri-point tip sizes available?

On the page for replacing the battery in my mid-2012 13” macbook pro,

MacBook Pro 13" Unibody Mid 2012 Battery Replacement

it tells me I need a Y0 tri-point screwdriver. In Step 5 it states:

• One 5.6 mm Tri-point screw
• One 13 mm Tri-point screw

Are those measurements for the screw length or are Y0 tri-points available in assorted sizes OR are Y0, Y00, etc. each a fixed size designation? Researching it online is not definitive, and most I find are tri-wing vs tri-point.

I did find your Mako Driver Kit - 64 Precision Bits listing Y000, Y00, Y0 and Y1.