Adjustable Lampshade Extension, 5-1/2- 9 inches

Quality Lamp Parts for Quality Restorations Adjustment range: 5-1/2" - 9" Top Plate: 1/4" diameter, supports shade Top Thread: 1/4-27 fits standard finial,  Base Threaded: 1/8 IP, standard 3/8" diameter lamp pipe more Shade Risers and Extensions 2-1/2"-6" Extension 1" Riser 2" Riser   Adjustable Lampshade Extension provides an easy method of raising or lowering harp-type lamp shades, without rewiring lamps. Adjustment range is 5-1/2" - 9". This style adjustable lampshade extension is often used with lamp-socket-clusters. If using in place of lamp harp: lamp must have an 1/8IP - 3/8" standard female lamp pipe fitting for extension to screw into.  How to Use Adjust height by loosening thumb screw. Move shade stem to best position.  Re-tighten thumb screw. Knurled threaded ring near top supports lampshade. Lamp finial screws down on top threaded rod to secure lamp shade.