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The different types of hollow wall anchors are rated to hold different weights. In general, expanding plastic sleeve anchors can usually only hold up to 20 lbs. Molly bolts are usually rated to hold up to 50 lbs., while toggle bolts can hold up to 100 lbs. Keep in mind, however, that even toggle bolts can’t support as much weight as a fastener driven into a wall stud or solid wood blocking in the wall.