These are substantial lamps. It extends almost 4 foot long and is solid brass. The example on the left has a lamp housing and wall box that are heavy cast parts. The shades screw directly into the cast lamp housing and are designed specifically for this lamp. The 3 double elbow joints are not just friction fit… they have 4 gears on each one. The joint design is unique to this type of lamp. The base has a heavy mounting bracket and can be mounted to a table or wall. The 2 lamps on the right have an interesting eye lid type shade and a beautiful complex elbow joint. I believe all were made in England. $950 each