For SIZE and PRODUCT INFORMATION ** scroll down page **
Size
4-1/2" Diameter
Center Hole: 7/16"
Brass Vase Caps are a spun brass go-between, fits between lamp base and socket. Attractively caps off vases and ginger jars. 4-1/2" diameter. Center hole slips 1/8 IP - 3/8" standard lamp pipe. To assure proper fit select vase-cap by interior diameter.