The 5 Inch Dome Zoom Port (125DZ/104) is an accessory 5 Inch Zoom port for Sigma 10-20mm fisheye, Canon EF-S 10-22mm, Canon EF-S 18-55mm, Nikon 16mm, Sigma 14mm, Sigma 15mm wide angle and other lenses.

Length- 125DZ
Thread- 104mm