This is a 9" 5-Piece Stainless Steel Scrim Set for the Altman 1000S, 2000L, and 1200SE Fresnels.
Full scrims dim the light across the entire beam spread, and 1/2 scrims are used to even the beam spread when lighting a subject or background from an angle.
Set includes 1 each: Full, Half Single, and Half Double.
Set includes 2 each: Full Double