Door Pivot Hinges,Invisible Pivot Hinge System with Door Ball Catch Hardware for Max 200 lb Heavy Duty Wood Doors & Hidden Door Bookcase & Secret Door,360 Degree Rotation,Stainless Steel (Type I)

Door Pivot Hinges,Invisible Hinge System with Ball Catch Hardware for Max 200 lb Heavy Duty Wood Doors & Hidden and Secret Bookcase, Murphy Bookshelf (1)

Yosoo Latch Lock Zinc Alloy Security Pull Ring Spring Bounce Door Bolt for Window Shed Gate Toilet Bedroom

Heavy Duty Pivot Hinge for Wood Door - HBL' Stainless Steel Hidden Door Hinge for Secret Door, with 360 Degree Rotation, Invisible Pivot Door Hardware for Bookshelf.