B&P Lamp No. 1 Size Oil Lamp Adapter - B&P Lamp No. 1 Size Oil Lamp Adapter, No. 1 size oil lamp adapter w/turned brass thread, Comes with 1/8 IP nipple that is 5/8" long, Fits all of Lamp Supplys No. 1 collars and many old collars,. Features Include: No. 1 Size Oil Lamp Adapter, No. 1 size oil lamp adapter w/turned brass thread, Comes with 1/8 IP nipple that is 5/8" long Fits all of Lamp Supplys No. 1 collars and many old col, Fits all of Lamp Supplys No. 1 collars and many old collars