H&Y Filters Drop-In K-Series Circular Polarizer Filter for H&Y Filters 100mm K-Series Filter Holder-95mm sc02 there's a 3/8"-16 screw on

there's a 3/8"-16 screw on each end of the bar that you can attach additional gear to via ball heads

LS-223C - Leofoto

The cheese-style NATO-Style Handgrip with 1/4"-20 Mounting Threads from Leofoto mounts easily onto the included NATO-style rail on your camera cage or rig to facilitate a low-angle shot

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H&Y Filters Drop-In K-Series Circular Polarizer Filter for H&Y Filters 100mm K-Series Filter Holder-95mm sc02 there's a 3/8"-16 screw onThis Drop In K Series Circular Polarizer Filter from H&Y Filters is made specifically to fit between a separately available H&Y Filters 100mm K Series Filter Holder and one of the filter holder's adapter rings. When in use, this filter can help reduce reflections and glare by filtering out light that has become polarized due to reflection from a non metallic surface. The light from the sun naturally becomes partially polarized due to reflecting off