(40) glass lampshade PCs @ lock nut poss @® washer ASPCA @ bolt screw PCs Loosen cross screw ©, rotate to fixed the hanging tube @ io the light fixture ©, and tighten screw © again Use one more washer If the sower don't tighten enough 2.Install the glass lampshades @ to the light fixture (D with bolt screw @ and washer ® and lock nut @, like picture showed. Loosen the slotted screw @ and adjust the height of the fixture you need ,after that rotate screw @ to make tighten again.