ARTBIN-Twisterz Interlocking Storage System: Medium Tall. Each jar of this clever storage system has a notched bottom which allows it to be attached to the lid of another jar creating one interlocking stacked unit. Simply twist them into place and they won't come apart until you want them to. Several different jars sizes are available and any jar with the same diameter can be mixed and matched to meet your own personal needs (each sold separately). This package contains one 9fl-oz jar and one screw-on lid. Jar measures 2-3/4 inches tall and 3-3/8 inches in diameter. Not for food use. Imported.