Source Four / S4 Zoom Size A Glass Gobo HolderThe pattern holder slot is on the top side of the barrel and in front of the shutters. It accommodates an A size pattern holder. The pattern holder handle can be bent away from the shutter handle to keep it from interfering with the action of the shutter handle. Product Features Accommodates an A size pattern holder Pattern holder handle can be bent away from the shutter handle Black in colour Glass Pattern Holder Product Specifications A size for 5