The Takahashi TMW0001 T-Ring is a wide mount T-ring.
Designed specifically for Nikon film and digital SLR cameras.
The Takahashi TMW0001 T-Ring works with Takahashi telescopes.
The Takahashi TMW0004 T-Ring was designed for Canon EOS film & digital SLR cameras, including the 20Da.
Wide mounting fitting for Takahashi telescopes.