Seller: roussodesigns (14,117) 100%, Location: Baltimore, Maryland, Ships to: Worldwide, Item: 360829491887 Untitled We have engineered a Porcelain Ceramic PRIVACY Door Knob set to a Very affordable price - Includes all of the important improvements Knobs are securely connected to the Rosette/Backplates No set screws to become loosen over time Rose-liner eliminates exposed connecting screws. Email if you have Questions, quick reply Monday through Friday. Not difficult when you read the instruction included, here is an overview. After the latch is in place, Install Outside Adapter with screw post through holes in latch. Install split connecting rod into latch . Insert locking rod into privacy adapter. Align the inside privacy adapter with the outside one and fix with metal thread screws. Place spring over locking boss on split connecting rod and then install the one piece knob units. $8.99 Flat Shipping USA - International only $18.99 Buy as many as needed - no additional S/H - Just the one Flat Rate Privacy upgrade is available (add $10), email for details One Free privacy upgrade with each 3 sets purchased on one order, if requested when payment is made.