Lamp parts:Off-on 4-wire touch switch that (once installed) works by touching any metal on your table lamp (including the harp or saddle). These measure 1 1/2" x 2" and are 3/4" tall and are rated 150W-60Hz, 120VAC. Indoor use only. 110 volt only. Some assembly required, but it does come with directions.This is off/on only- see our store for a 3-level. Will not work withfluorescents or LEDs- strictly for incandescent use only. We can combine with other items to save shipping. We sell in lots of 6 for less- see our store. $7.08 each.Shipping is $2.80 for 1 and $.40 for each additional piece."How to Request Invoice when using shopping cart"---From your eCRATER cart, near the top of the page, move your mouse curser over our name “lamppartsguy” and a drop down menu will appear with the option to request invoice from seller. Combined shipping- to get cheapest shipping costs (when buying different items) please buy what you need and “request invoice” so we can send invoice with lowershipping costs.