Griffin bobbins are guaranteed for life! Great construction.
The standard is a good entry level bobbin while the standard ceramic has a ceramic tube that will last forever.
The magunum is a must for hair bugs, and the pewee and the bass/salt offer up a smaller and larger version of the standard.
Flared has a flared tip for larger threads and flosses and the magnum adjustible allows to adjust the tension.
Left to right are: standard, flared, supreme ceramic, pewee ceramic, magnum ceramic and bass/salt ceramic.