Apollo Designs MS-2098 Shreds steel gobo. Available in common gobo sizes. When ordering, please indicate which fixture you’re using for this gobo. If specifying an ETC Source Four, please specify A or B Size, as that light can take both sizes. If using a Source Four JR., please be sure to note the ‘Jr.’ in the fixture type.If you need further assistance, you can call us at 800.908.3842.