This 2 Pack clip-on lampshade fitter is ideal for converting your existing spider fitter lamp shade to a clip-on shade. Fits most standard light bulbs and most standard lamp shades that have a "spider-fitter".  No need to measure harp size, just verify you are using a standard "Edison" light bulb (Not designed for use with candelabra flare bulbs or CFL bulbs.)

• FINISH - Polished Brass Finish. Dimensions: 4.5" Height x 2" Width.  Includes 2 clip-on fitters.
• EASY TO USE - The easiest way to convert your old lamp to accept a standard spider fitter lampshade with our having to install a harp.
• QUALITY - High quality durable materials ensure the clip will last. All Metal Construction.  Securely attaches your spider-fitter lampshade to a single-socket lamp.
• BULB CLIP - Clip dimension 4-1/2"h, fits standard sized Edison type A bulbs. It will not fit exceptionally large CFL or LED bulbs (may not fit some larger 3-way bulbs)  Includes polished brass finial threaded on standard 1/4-27m threads.
• SUITABLE FOR - Most small table and floor lamps that use standard sized light bulbs.  Best for use with small to medium sized lamps in bedroom, living room, office, or den.  Works best with any shade that has the spider-fitter.