We have solar tubes in both equally bathrooms and master closet & we like them. Not in bedrooms. Solar Men did an excellent job and by no means have we had any difficulty eight years on. Ferrules: Some have rings on the tip, building incorporating a wire to your bolt https://reidn9ww1.bloggip.com/35772734/solar-cell-home-system-things-to-know-before-you-buy