knobwell 1 pack interior crystal door knob keyless glass bubble door knobs passage hall/closet knob matte black round door knobs dual sided knobwell knobwell bubble glass door knobs are proof-positive that fashion and function can peacefully and beautifully co-exist. from timeless elegance to striking modernity, our knobs fit and accentuate virtually any decor. naturally, they're also designed, crafted and tested to ensure durability. our premium quality glass door knob is an ideal decorative accessory, professionally designed to perfectly compliment a wide range of contemporary and modern residential and commercial interior doors.