Marelux 42303 Aquista 100/52 Wide Angle Wet Lens (M52 Thread Mount) Nikon Z Housings The housing contains a leak

The housing contains a leak sensor and includes a slot for an optional vacuum valve system to be added(though for a waterproof camera this seems a little overkill)

ANTI-REFLECTION RING NIKON 18-55 AF-P

ANTI-REFLECTION RING NIKON Z 24-70 F/2

There is another product that comes with those included

Nylon Focus Gear for Canon EF 8-15mm f/4L Fisheye USM with Metabones use for SONY

Marelux 42303 Aquista 100/52 Wide Angle Wet Lens (M52 Thread Mount) Nikon Z Housings The housing contains a leakAquista 100 52 Wide Angle lens Dimensions 130mm Outer Diameter x 93mm Body Construction Hard Anodized Aluminum Alloy Lens Construction 6 elements in 5 groups Lens Coating Anti Reflective Coating