As used on our own TT models - allowing you to wind a coil using rail poles, and mounted to a specific base, with a specific magnet - and fit a humbucker into a single coil route.
These are what we’d consider “budget” Humbucker bobbins – and, maybe, that’s overly harsh on what is, essentially, a hunk of injection molded plastic, but, for the sake of honesty – this version simply aren’t as well made as our usual Humbucker bobbins Available in Slug and Screw type, 52 and 50mm pole spacing, and in Black, White, Ivory, Blue, Pink, Green, Orange and Chrome.