The adapter 1/4" to 3/8" with ring protecting aganist too deep screw in.

Universal photo tip with 2 threads - 1/4" female and 3/8" female. Aluminium made.

Universal photo tip with 2 threads - 1/4" female and 3/8" male. Aluminium made.

Universal photo tip with 2 threads - 1/4" male and 3/8" female. Aluminium made.

Universal photo tip with 2 threads - 1/4" male and 3/8" male. Aluminium made.

Universal photo pin with 1/4" and 3/8" male thread.

The pin with 10mm and wing nut.

Photographic pin with two 3/8" and 1/4" threads

The adapter 1/4" to 3/8" with ring protecting aganist too deep screw in.

Brass pin 16mm with 10mm screw and nut