A brass door viewer, as per photos, on requires a 20mm hole, ideal for seeing through solid doors, easy to fit.
M4 Through Door Handle Screw & Bolt Kit w/ Sleeve - Pozi Fixings Handles & Knobs
RV Power Cord Cover - Black Round Cable Cover with Lid | Cable Pass Through Wire Organizer, RV Covered Power Cord Hatch Round Accessory for Motorhome, Camper Trailer, Electric Port
Acrylic Display Stand Clear And Transparent Design Optimal Viewing Angle
Acrylic Display Stand Compact Design Elegant Presentation Optimal Viewing Angle
M4 Door Handle Bolt Through Fixings, 25Pcs Fixing M4, silver