Material: Carbon Steel; Diameter: 9mm / 0.35"; Thread Size: M4; Thread Pitch: 0.7mm Advantage: Screw thread design, convenient to install and remove, no need for a tool. With a smooth metal surface, good choice for decoration. Instruction: Screw the lamp finial cap on the screw top of lamp harp directly. Also, you can choose to screw the lamp finial cap on a screw bolt or threaded pipe. Application: Suitable to use at a top of a table lamp, floor lamp, desk lamp, pendant lamp or other DIY projects. These lamp finials caps not only fix the lamp shade but also decorating the lamp harp. NOTE: Please confirm the thread size before ordering Suitable to use at a top of a table lamp, floor lamp, desk lamp, pendant lamp or other DIY projects. These lamp finials caps not only fix the lamp shade but also decorating the lamp harp. Specification Color: White Material: Carbon Steel Diameter: 9mm / 0.35" Thread Size: M4 Thread Pitch:  0.7mm Packing List: 20 x Lamp Finials Cap Advantage   Screw thread design, convenient to install and remove, no need for a tool. With a smooth metal surface, good choice for decoration. Instruction    Screw the lamp finial cap on the screw top of lamp harp directly. Also, you can choose to screw the lamp finial cap on a screw bolt or threaded pipe. NOTE: Please confirm the thread size before ordering