Reflecting about 75% and transmitting about 25%.
Color changes between blue and gold depending on angle.
Very cool to experiment with.

Set contains: 6 colored filters (CMYRGB)
4 diffraction gratings.2- double-axis 532 lines/mm & 2-linear 1000 lines/mm.
Polarizing filter.
 

Set contains 4 unmounted 2 inch by 2 inch diffraction gratings.
2- double-axis 532 lines/mm & 2-linear 1000 lines/mm.
 

Set contains 6 unmounted 2 inch by 2 inch color filters.
Cyan, Magenta, Yellow, Red, Green and Blue.
 

Neutral density filter
30mm diameter ND4.

35mm slide mounted polarizer