Description: Designed for SLR DSLR camera digiscoping;connect camera to spotting scope for photography convenient and easily Universal photography sleeve with M42 threads on both ends fits all 42mm diameter eyepiece;so please measure your eyepiece to make sure it will fit your particular spotting scope for it is a well made unit. T2 T-ring adapter: Useful accessory allows you to attach a camera for Nikon DSLR SLR to a telescope, camera adapter, and other astrophotography accessories. Usage: Thread T-adapter into T-ring adapter, then thread the whole mount adapter into DSLR/SLR camera to connect to telescope/microscope Both sides of the hollow portion of the sleeve do not affect the focusing handwheel adjustment. Specification: Material: Aluminum Tube length: 2.76inch / 7cm Overall Length: 3.11inch / 7.9cm Diameter: 1.77inch / 4.5cm Thread: Both the Adapter are Universal M42x0.75 Thread Color: Black Mount: for Nikon DSLR SLR Camera Package Includes: 1 Piece T-ring Camera Lens Adapter for Nikon DSLR SLR 1 Piece 42mm Spotting Scope Mount Adapter