1 x 72-77mm Magnetic Step-Up Adapter Ring
and the fabric is suited for strobes
If the first number is bigger
GOLD- This reflector "warms up the image" and is recommended for still life
such as cool effects
NEEWER BH20B Upgraded 21W LED Video Light Stick Kit Microphones & Accessories 1 x 72-77mm Magnetic Step-UpDescription Upgraded Bi Color Light Stick Kit This designed for photographers and studio photography. Color filters in red, yellow, and blue change the light colors and provide you with creative effects. Each light stick offers 3200K~5600K color temperature, a 0~100% dimming range, high CRI of 97+, 21W power, 105 warm LEDs, and 105 cold LEDs. Ideal for YouTube video recording, vlogging, gaming, live streaming, portrait, and product photography 2. 4G