Develop diagnostic x -rays in the operatory or any convenient location. Angled top permits good visibility. Ruby red filter will safely develop x -rays under normal light. Comes complete with timer, batteries included, 2 stainless steel hangers to be used with single x-ray film and 4 jars for chemical solution. Made of durable plastic, with suction cups to hold unit firmly in place when removing top. supplied with 4 plastic covered cups and 4 x - ray holders.