Dear Damian Polanski

Thank you for your inquiry.

Both products are our Rosewell pickups, with the only difference being the material of the bobbins used.
Products labeled with NT and BT use plastic bobbins,
while products labeled with N and B use fiber flatwork bobbins.
The specifications of the products are the same.

If you have any other inquiries, please feel free to let us know.

Best regards,

poul – Production manager

Roswell pickups