Blob System 96 Cut-Up in Iridized Black Opal is a whimsical pre-cut "splat" of color. Cut-Ups are a delightful add-ons that will spark up your work with shapes that would be impossible to cut by hand! As a member of the System 96® family these Cut-Ups are "Tested Compatible" and can be confidently used with all System 96 and COE 96 sheet glass. Approximately 1-1/2" x 1-1/2" in size.