DivePro Double Ball Arm (150mm/200mm/250mm) Size:200mm The Hollis M3 Mask is

The Hollis M3 Mask is also compatible with the Hollis M3 GOPRO Mount for M3 Mask (see SKU: HLSM3GPM)

Zirconium-plated inlet tube for increased corrosion resistance

harness and pocket material dual position adjustable sternum strap

A huge field of vision and no more fogging thanks to our patented and independently tested air circulation technology

DivePro Double Ball Arm (150mm/200mm/250mm) Size:200mm The Hollis M3 Mask isOverview Aluminum photo arm for underwater photography to fix a flash or underwater lighting. Three lengths available: (Z12A) 6 inch or 150mm (Z12B) 8 inch or 200mm (Z12C) 10 inch or 250mm 25mm diameter ball at the ends