Vintage Design:The decorative lamp finials made of durable alloy with antique black finish and with retro workmanship details,will adds the marks of time and a unique decorative language on top of your lighting. Wide Applications:The finials for lamps are ideal decoration for replacing the old lamp shade screw cap of your table lamps,small floor lamp,fan lamp pendant,curtain curtain pendant,furniture lamp decorative pendant,etc. Dual-thread Design:The screw is with dual-thread design,fit both 1/8 IP(3/8") and 1/4-27 standard harp thread.Please measure your harp thread of lampshade before purchasing. Package includes 2 pcs lamp finial cap knobs with internal screws.The screw was assembled to fit 1/4-27.If 1/8 IP is needed,please remove the screw by tools,or simply rotate it with your finger to remove it easily. Easy Installation:You can easily screw the finial cap to the lamp harp after installing the lamp shade, which can help keep a lampshade in place.This can be a good opportunity for those with a passion for DIY decorating to show off their skills and manifest their artistic taste for others to see. 2 Pack Black Lamp Finial Cap Knob Retro Decoration with Dual-Thread Screw for Lamp Shade,Fit Both 3/8" and 1/4-27