Lens Collar Tripod Ring with Quick Release Plate for Sigma 40mm f/1.4 DG HSM Art
For Sigma 40mm f/1.4 DG HSM Art Lens. Sigma 40mm f/1.4 DG HSM Art Lens. 1 x iShoot Tripod Mount Ring IS-SM40 for Sigma 40mm f/1.4 DG HSM Art Lens. CNC Aviation Aluminum Lens Collar Support Tripod Mount Ring IS-SM40.