Lens holder, "demo", on support

DL300-1D
Price on request
Black plastic frame on a support with a round cutaway area
(D=50.1 mm) for holding lenses up to 50 mm in diameter, with
two threaded aluminium clamping rings
Support: L=90 mm, D=10 mm
Frame diameter: 120 mm
Distance from centre of frame to support end: 150 mm