18U601 up for sale is a lot of 2 new glass neon sign and cleveland clock #200 socket adapters , used on vintage signs and also vintage neon clock including the cleveland Aztec and exposed ring clocks , nice new parts for your clock or sign project , contact us it you want to make a higher volume purchase , these are priced at lots of 2 in this sale , these come as shown in the photos , note clocks in photos are shown as examples of the clocks these housings fit can also be used in many other neon clocks and sign applications, The dimensions are as follows these would fit a 1 1/4 hole , the total length is around 4 3/8 the head measures 1 1/2 inches then tapers down a bit toward the neon hole , these have a brass nut and wire retainer washer on the end just like the orginals ,